CN110676603B - A grounding device for power electronic equipment - Google Patents
A grounding device for power electronic equipment Download PDFInfo
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- CN110676603B CN110676603B CN201911103745.XA CN201911103745A CN110676603B CN 110676603 B CN110676603 B CN 110676603B CN 201911103745 A CN201911103745 A CN 201911103745A CN 110676603 B CN110676603 B CN 110676603B
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- Prior art keywords
- grounding
- cone
- copper
- plate
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 81
- 229910052802 copper Inorganic materials 0.000 claims abstract description 59
- 239000010949 copper Substances 0.000 claims abstract description 59
- 239000002184 metal Substances 0.000 claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims abstract description 40
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 23
- 239000010935 stainless steel Substances 0.000 claims abstract description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 19
- 239000010439 graphite Substances 0.000 claims abstract description 19
- 229920000742 Cotton Polymers 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 32
- 239000010410 layer Substances 0.000 claims description 30
- 239000002689 soil Substances 0.000 claims description 22
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 239000011241 protective layer Substances 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/70—Insulation of connections
- H01R4/72—Insulation of connections using a heat shrinking insulating sleeve
Landscapes
- Cable Accessories (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a grounding device of power electronic equipment, relates to the technical field of grounding bodies of power electronic equipment, and aims to solve the problems that most of manual grounding bodies used by direct current equipment in the prior art adopt column structures or block structures, current flow areas of the two structures are limited to a certain extent, and all the manual grounding bodies are influenced by geographical environments. The direct current grounding element main body comprises a cone grounding assembly, a main body cone-shaped frame is arranged on the outer surface of the cone grounding assembly, conical surface guide plates are arranged on the periphery of the main body cone-shaped frame, the number of the conical surface guide plates is four, a metal copper plate is arranged on the inner side of each conical surface guide plate, a graphite plate is arranged on the outer side of each metal copper plate, a stainless steel copper clad layer is arranged on the outer side of each graphite plate, the graphite plates are connected with the metal copper plates and the stainless steel copper clad layer in a combined mode, and an outer cotton absorbing core is arranged on the outer surface of each stainless steel copper clad layer.
Description
Technical Field
The invention relates to the technical field of power electronic equipment grounding bodies, in particular to a power electronic equipment grounding device.
Background
The grounding body is mainly divided into a natural grounding body and a manual grounding body, wherein various metal components which are directly contacted with the ground, a metal well pipe, a foundation of a reinforced concrete building, metal pipelines, equipment and the like are used as the metal conductors which are used for grounding, the grounding body is called as the natural grounding body, the grounding body is used as a conductor which is closely contacted with the soil of the ground and provides electric connection with the ground, and the safe scattered lightning energy enables the grounding body to leak into the ground. In the design of grounding, various metal structures, pipelines and equipment which are reliably connected with the ground are utilized as grounding bodies, which are called natural grounding bodies. If the resistance of the natural grounding body can meet the requirement, potential safety hazards are not generated on the natural grounding body, and the natural grounding body can be used as the grounding body when no forced standard exists. And a conductor artificially buried in the ground to serve as a grounding device is called an artificial grounding body. Generally, a metal object having a cross section meeting the grounding requirement is buried under the ground to a proper depth, and the resistor meets the prescribed requirement, thereby being used as a grounding body. With specific reference to the grounding specification, lightning protection grounding, equipment grounding, electrostatic grounding and the like need to be distinguished. Grounding is the most important link of lightning protection engineering, and is the technology of direct lightning protection, electrostatic induction of lightning, electromagnetic induction and lightning wave invasion, and finally lightning current is led into the ground. Therefore, without good grounding techniques, no acceptable lightning protection process is possible. The protection earthing function is to make good metal connection between the uncharged metal part of the electric equipment and the earthing body, reduce the earth voltage of the contact point and avoid the danger of human body electric shock.
However, most of the manual grounding bodies used in the existing direct current equipment adopt cylindrical or block-shaped structures, the current flow area of the two structures is limited to a certain extent, and meanwhile, all the manual grounding bodies are affected by the geographic environment, so that the existing requirements are not met, and a grounding device of the power electronic equipment is provided.
Disclosure of Invention
The invention aims to provide a grounding device for power electronic equipment, which solves the problems that the manual grounding body used for the direct current equipment in the background technology adopts a cylindrical or block-shaped structure, the current flow area of the two structures has certain limitation, and all the manual grounding bodies are influenced by the geographic environment.
The technical scheme is that the power electronic equipment grounding device comprises a direct current grounding element main body, wherein the direct current grounding element main body comprises a cone grounding assembly, the outer surface of the cone grounding assembly is provided with a main body cone-shaped frame, cone-shaped guide plates are arranged around the main body cone-shaped frame, the four cone-shaped guide plates are arranged, the inner side of each cone-shaped guide plate is provided with a metal copper plate, the outer side of each metal copper plate is provided with a graphite plate, the outer side of each graphite plate is provided with a stainless steel copper clad layer, the graphite plates are connected with the metal copper plates and the stainless steel copper clad layer in a combined mode, the outer surface of each stainless steel copper clad layer is provided with an outer cotton absorbing core, the stainless steel copper clad layer is connected with the outer cotton absorbing core through a clamping groove, the cone grounding assembly is internally provided with a cone inner cavity, the cone inner cavity is internally provided with a resistor reducing agent, the resistor reducing agent is internally provided with copper electric connection cones, the resistor reducing agent and the copper connection cones are combined with the cone inner cavity, the copper connection cones are connected with the copper connection cone, the copper connection cone connection protection assemblies are arranged above the copper connection cone, and the copper connection protection assembly connection assembly is connected with the cone connection assembly.
Preferably, a plane top sealing cover is arranged above the cone grounding assembly and is connected with the cone grounding assembly in a combined mode, a sealing interface is arranged above the plane top sealing cover and is fixedly connected with the plane top sealing cover, insulating handles are arranged on two sides of the sealing interface, and the insulating handles are connected with the plane top sealing cover through bolts.
Preferably, an insulation assembling end is arranged above the sealing interface, the insulation assembling end is connected with the sealing interface through internal threads, a soft rubber sleeve is arranged above the insulation assembling end, and the soft rubber sleeve is fixedly connected with the insulation assembling end.
Preferably, the inside of switching protection subassembly is provided with the wiring chamber, the top in wiring chamber is provided with sealed chamber, the bottom in wiring chamber is provided with wiring inductive terminal, wiring inductive terminal's top is provided with ground connection metallic copper line, and wiring inductive terminal and ground connection metallic copper line and copper system electric connection awl.
Preferably, a liner protection layer is arranged above the grounding metal copper wire, the liner protection layer is connected with the switching protection assembly through a sealing cavity, and a grounding wire group is arranged above the liner protection layer.
Preferably, the grounding metal copper wire and the grounding wire group are connected with the liner protection layer in a combined way, and the grounding wire group is connected with the insulation assembly terminal and the soft rubber sleeve in a combined way.
Preferably, the main body conical frame is connected with the conical surface guide plate through a clamping groove, and the conical surface guide plate is formed by combining a metal copper plate, a graphite plate, a stainless steel copper-clad layer and an external cotton-absorbing core.
Preferably, the main body conical frame and the copper electric connection cone have the same structural shape, backfill earth materials are arranged above the direct current grounding element main body, and external ground is arranged above the backfill earth materials.
Compared with the prior art, the invention has the beneficial effects that:
1. The cone grounding assembly mainly comprises a main body cone-shaped frame, four groups of cone-shaped guide plates are arranged on the periphery of the main body cone-shaped frame, so that four current guiding and dispersing surfaces can be provided, current guiding and dispersing of a grounding circuit can be finished from four different directions respectively, and the conductivity is improved to the greatest extent;
2. The conical surface guide plate is formed by combining a metal copper plate, a graphite plate, a stainless steel copper-clad layer and an external cotton-absorbing core, the cost of the innermost metal copper plate is lower than that of silver, but the innermost metal copper plate has extremely high conductivity, current generated by a grounding wire can be outwards led out, the graphite plate on the outer side of the metal copper plate is used as a conducting medium in the middle of a plate, the current transmission is facilitated, the stainless steel copper-clad layer on the outer side of the graphite plate is used as an external protective shell, the stainless steel copper-clad layer has extremely high corrosion resistance and can be placed in underground soil for a long time for use, the whole service life of the device is prolonged, the maintenance cost is reduced, meanwhile, the external cotton-absorbing core is arranged on the outer surface of each stainless steel copper-clad layer, the grounding device is required to be in a moist environment, the conductivity is reduced due to the fact that the resistance around the grounding device is increased, the moisture in the soil can not absorb the moisture after saturation, the redundant moisture can be absorbed and stored through the cotton core, excessive moisture is avoided, and the moisture is absorbed from the cotton core when the moisture in the soil is reduced, the moisture in the soil is guaranteed, so that the moist environment is reversed;
3. According to the invention, the grounding wire is arranged in the soft rubber sleeve, the sleeve is connected with the grounding device through the sealing port assembly, the sealing performance of the connecting part is ensured through the series of sealing measures, the aging of the wire caused by the air entering thickness is avoided, and meanwhile, the sleeve is wrapped outside the wire to protect the grounding wire, so that the grounding wire does not need to be in direct contact with soil, and the corrosion of the wire caused by substances in the soil is avoided.
Drawings
FIG. 1 is an overall front view of the present invention;
FIG. 2 is a schematic view of the overall mounting structure of the present invention;
FIG. 3 is a schematic view of the overall partial structure of the present invention;
FIG. 4 is a schematic view of a conical baffle structure according to the present invention;
fig. 5 is an enlarged schematic view of the structure a of the present invention.
The direct current grounding element comprises a direct current grounding element main body, a main body conical frame, a conical surface guide plate, a plane top sealing cover, an insulating handle, a sealing interface, an insulating assembly end, a soft rubber sleeve, an external ground, a backfill material, a grounding wire group, a resistor reducing agent, a cone grounding assembly, a copper grounding cone, a switching protection assembly, a cone inner cavity, a copper plate, a graphite plate, a stainless steel copper clad layer, a 20, an external cotton core, a21, a liner protecting layer, a 22, a sealing cavity, a 23, a wiring cavity, a 24, a grounding metal copper wire, a 25 and a wiring induction terminal, wherein the main body of the direct current grounding element is 1, the main body of the direct current grounding element is 2, the main body conical frame is 3, the conical surface guide plate is 4, the plane top sealing cover is 5, the insulating handle is 6, the sealing interface is 7, the insulating assembly end, the 8, the soft rubber sleeve is 9, the external ground, the grounding wire is 10, the backfill material, the grounding wire group, the 12, the resistor is the resistor, the 13, the cone grounding element, the cone, the grounding assembly, the copper wire and the 12, the cone inner cavity, the 17, the inner cavity, the 17 and the copper layer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-5, an embodiment of the present invention is provided: the utility model provides a power electronic equipment earthing device, including direct current earthing component main part 1, direct current earthing component main part 1 includes cone earthing component 13, cone earthing component 13's surface is provided with main part conical frame 2, main part conical frame 2's periphery is provided with conical surface guide plate 3, and conical surface guide plate 3 has four, possess four electric current's conduction and dispersion face, accomplish the electric current conduction of earth connection from four different directions respectively, promote the conductivility to the furthest, conical surface guide plate 3's inboard is provided with metal copper plate 17, the cost is less than silver, but have high conductivility, can outwards derive the electric current that the earth connection produced, metal copper plate 17's outside is provided with graphite plate 18, as the conduction medium in the middle of the plate, be favorable to the electric current's transmission, graphite plate 18's outside is provided with stainless steel copper layer 19, the device has extremely strong corrosion resistance, can be placed in underground soil for a long time for use, prolongs the whole service life of the device, reduces the maintenance cost, and the graphite plate 18 is connected with the metal copper plate 17 and the stainless steel copper clad layer 19 in a combined way, the outer surface of the stainless steel copper clad layer 19 is provided with an outer cotton-absorbing core 20, the cotton core can absorb moisture in the soil, because the grounding device needs to be in a moist environment, the electrical resistance of the periphery can be increased, the conductivity can be reduced, the moisture in the soil can have a saturation level, the soil can not absorb the moisture after saturation, at the moment, the excessive moisture can be absorbed and stored through the cotton core, the excessive moisture loss is avoided, and when the moisture in the soil is reduced, the soil can absorb the moisture from the cotton core, thereby realizing back feeding and guaranteeing the surrounding moist environment, and stainless steel copper clad layer 19 passes through the draw-in groove with outer cotton core 20 to be connected, the inside of cone grounding subassembly 13 is provided with cone inner chamber 16, the inside of cone inner chamber 16 is provided with resistance reducing agent 12, the inside of resistance reducing agent 12 is provided with copper and connects electric cone 14, be connected with the earth connection, electric current in the earth connection is derived through copper and connects electric cone 14, thereby diffuse, and resistance reducing agent 12 and copper connect electric cone 14 and cone inner chamber 16 composite connection, the top of copper connects electric cone 14 is provided with switching protection subassembly 15, and switching protection subassembly 15 and copper connect electric cone 14 composite connection.
Further, the top of cone grounding subassembly 13 is provided with plane top closing cap 4, adopt insulating material to make at, after the packing of accomplishing the cone, seal whole cone through the closing cap, be provided with the connection of circuit simultaneously in the top of closing cap and put the device, and plane top closing cap 4 and cone grounding subassembly 13 composite connection, the top of plane top closing cap 4 is provided with seal interface 6 for connect the protection hose who is equipped with the earth connection, and seal interface 6 and plane top closing cap 4 fixed connection, seal interface 6's both sides all are provided with insulating handle 5, and insulating handle 5 passes through bolted connection with plane top closing cap 4, the arrangement installation of cone of being convenient for.
Further, the top of sealed interface 6 is provided with insulating group's end 7, and insulating group's end 7 passes through internal thread connection with sealed interface 6, is convenient for install, ensures the sealing performance of junction simultaneously, avoids underground air to get into and causes the circuit ageing, and the top of insulating group's end 7 is provided with soft rubber sleeve 8, and soft rubber sleeve 8 and insulating group's end 7 fixed connection, arranges the earth connection of device at the intraductal, protects it through the sleeve pipe, makes the earth connection not need with soil direct contact.
Further, the inside of switching protection component 15 is provided with wiring chamber 23, the top in wiring chamber 23 is provided with sealed chamber 22, the inside in sealed chamber 22 is provided with rubber seal, not only can press from both sides tightly fixedly to entering into the circuit, the entering of air is avoided simultaneously also, the bottom in wiring chamber 23 is provided with wiring inductive terminal 25, wiring inductive terminal 25's top is provided with ground connection metal copper wire 24, and wiring inductive terminal 25 and ground connection metal copper wire 24 and copper electric connection awl 14 electric connection, the inside ground connection metal copper wire 24 of ground connection wire peels out, then with its contact with wiring inductive terminal 25, be convenient for realize the conduction of electric current and scatter.
Further, a liner protection layer 21 is arranged above the grounding metal copper wire 24 to wrap and protect the copper wire inside, the liner protection layer 21 is connected with the transfer protection assembly 15 through a sealing cavity 22, and a grounding wire group 11 is arranged above the liner protection layer 21.
Further, the grounding metal copper wire 24 and the grounding wire group 11 are connected with the liner protection layer 21 in a combined mode, the safety of a circuit is improved, the grounding wire group 11 is connected with the insulation group connection end 7 and the soft rubber sleeve 8 in a combined mode, and stability is improved.
Further, the main body conical frame 2 is connected with the conical surface guide plate 3 through a clamping groove, so that the conical surface guide plate 3 is convenient to assemble and install, the conical surface guide plate 3 is formed by combining a metal copper plate 17, a graphite plate 18, a stainless steel copper-clad layer 19 and an external cotton-absorbing core 20, and the backflow guide performance of the device is improved.
Further, the main body conical frame 2 has the same structural shape as the copper power connection cone 14, and a backfill material 10 is provided above the direct current grounding element main body 1, and an external ground 9 is provided above the backfill material 10.
Working principle: when in use, the grounding wire on the device is sleeved into the soft rubber sleeve 8 and is penetrated out from the insulating connecting terminal 7 at the other end, after the circuit is penetrated out, the protective layer on the surface of the circuit is stripped to expose the grounding metal copper wire 24 inside, the copper wire is plugged into the wiring cavity 23 inside the switching protection assembly 15 from the sealing interface 6, after the copper wire enters the wiring cavity 23, the outer liner protective layer 21 is clamped in the sealing cavity 22 above the wiring cavity 23, the wire is clamped and fixed through the rubber sealing ring at the inner side of the wiring cavity 23, the copper wire is contacted with the wiring induction terminal 25 at the bottom of the wiring cavity 23, the grounding copper wire is connected with the copper-made electric cone 14 through the wiring induction terminal 25, and when in operation, the current in the grounding wire is led out through the copper-made electric cone 14 and diffused, the diffused current is received by the conical surface guide plates 3 on four sides, the current is outwards dispersed into the soil, so that the grounding dispersion function is finished, after the circuit connection is finished, the insulating group connecting end 7 sleeved with the grounding wire is installed in the sealing interface 6 to finish fixing, then a pit with a designated depth is dug out on the ground, the conical surface guide plates 3 are placed in the pit, soil filling is carried out again, the soft rubber sleeve 8 is required to be kept vertically upwards in the process of soil filling, after the soil filling is finished, the soft rubber sleeve 8 is required to be higher than the ground by one section, rainwater is prevented from penetrating, finally, sealing performance of a hose piece is ensured, the air inlet is avoided, the circuit aging is avoided, the sleeve is used for protecting the grounding wire, the grounding wire is not required to be in direct contact with the soil, and the corrosion of the circuit caused by substances in the soil is avoided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911103745.XA CN110676603B (en) | 2019-11-13 | 2019-11-13 | A grounding device for power electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911103745.XA CN110676603B (en) | 2019-11-13 | 2019-11-13 | A grounding device for power electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110676603A CN110676603A (en) | 2020-01-10 |
| CN110676603B true CN110676603B (en) | 2025-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911103745.XA Active CN110676603B (en) | 2019-11-13 | 2019-11-13 | A grounding device for power electronic equipment |
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| Country | Link |
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| CN (1) | CN110676603B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210489849U (en) * | 2019-11-13 | 2020-05-08 | 苏州胜蓝精密机械有限公司 | Power electronic equipment earthing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203967263U (en) * | 2014-06-17 | 2014-11-26 | 蔡彭博 | A kind of multilayer spininess turbulent flow type is concentrated grounding pin |
| CN208489369U (en) * | 2018-05-11 | 2019-02-12 | 山东华通玻璃钢有限公司 | Earthing device of electrical equipment |
| CN208461010U (en) * | 2018-07-26 | 2019-02-01 | 山东济宁圣地电业集团有限公司鱼台圣宏电力安装分公司 | A kind of electric power earthing or grounding means |
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2019
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210489849U (en) * | 2019-11-13 | 2020-05-08 | 苏州胜蓝精密机械有限公司 | Power electronic equipment earthing device |
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Effective date of registration: 20241223 Address after: 210000 NO.666, Citi Village Industrial Development Zone, Taishan street, Jiangbei new district, Nanjing City, Jiangsu Province Applicant after: NANJING TERUI POWER MATERIAL Co.,Ltd. Country or region after: China Address before: 215000 No. 24, Tengfei West Road, Yinghu Industrial Park, Wangting Town, Xiangcheng District, Suzhou City, Jiangsu Province Applicant before: Suzhou Shenglan Precision Machinery Co.,Ltd. Country or region before: China |
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