CN113612105A - Water cooling system and laser equipment - Google Patents
Water cooling system and laser equipment Download PDFInfo
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- CN113612105A CN113612105A CN202110780987.3A CN202110780987A CN113612105A CN 113612105 A CN113612105 A CN 113612105A CN 202110780987 A CN202110780987 A CN 202110780987A CN 113612105 A CN113612105 A CN 113612105A
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- water
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- water cooling
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 342
- 238000001816 cooling Methods 0.000 title claims abstract description 144
- 238000004880 explosion Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/042—Arrangements for thermal management for solid state lasers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0405—Conductive cooling, e.g. by heat sinks or thermo-electric elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0407—Liquid cooling, e.g. by water
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
- Lasers (AREA)
Abstract
The invention discloses a water cooling system and laser equipment, which comprise a first water dividing block, a second water dividing block and at least two water cooling plates, wherein the first water dividing block is provided with a first water inlet and a second water outlet; the first water diversion block is used for water inflow, and the water cooling plate is used for cooling a water-cooled object; the second water diversion block is used for yielding water; each water cooling plate is respectively communicated with the first water dividing block, and water entering the first water dividing block flows into each water cooling plate; the second water diversion block is respectively communicated with each water cooling plate, and water in each water cooling plate flows out of the second water diversion block and is discharged from the water diversion block. According to the water cooling system, the first water diversion block is arranged, so that water flow is diverted to different water cooling plates, and the water pressure is reduced. And, through setting up the second water diversion piece with the rivers of different water-cooling boards flow into respectively through a plurality of entrances and assemble the drainage away in the second water diversion piece, reduce the whole water pressure of water cooling system, be difficult to the explosion and leak, the security is high, and it is efficient to lead to the water.
Description
Technical Field
The invention relates to the technical field of water cooling, in particular to a water cooling system and laser equipment.
Background
The high-power optical fiber laser has high power, the electro-optic conversion efficiency is about 35%, and the heat production quantity is large, so a water cooling system is required for cooling. In addition, in other high heat production industrial products, a water cooling system is also needed for cooling.
For a large-scale water cooling system, the water resistance is gradually increased along with the upgrading and the expansion of the water cooling system. Especially, water resistance is continuously superposed due to the positions of a water channel adapter, a water pipe connector, a water cooler interface and the like in the water cooling system, water pressure is increased, and hidden dangers such as pipe explosion, poor installation, water leakage and the like are easily caused.
Disclosure of Invention
The invention aims to provide a water cooling system and laser equipment, which have the advantages of low water pressure, low possibility of pipe explosion and water leakage and high safety.
The invention discloses a water cooling system, which comprises a first water distribution block, a second water distribution block and at least two water cooling plates, wherein the first water distribution block is connected with the second water distribution block; the first water diversion block is used for water inflow, and the water cooling plate is used for cooling a water-cooled object; the second water diversion block is used for yielding water; each water cooling plate is respectively communicated with the first water dividing block, and water entering the first water dividing block flows into each water cooling plate; the second water diversion block is respectively communicated with each water cooling plate, and water in each water cooling plate flows out of the second water diversion block and is discharged from the water diversion block.
Optionally, at least two pipelines which are not communicated with each other are arranged in the water cooling plate; the water inlets of the pipelines are respectively communicated with the first water diversion blocks; and the water outlets of the pipelines are respectively communicated with the second water distribution block.
Optionally, the pipe comprises a first pipe and a second pipe; the water inlets of the first pipeline and the second pipeline are respectively communicated with the first water diversion block; and the water outlets of the first pipeline and the second pipeline are respectively communicated with the second water distribution block.
Optionally, the water inlet and the water outlet of the first pipeline and the second pipeline are both located at the same end of the water cooling plate.
Optionally, the water outlets of the first pipeline and the second pipeline are respectively located on two side edges of one end of the water cooling plate; and the water inlets of the first pipeline and the second pipeline are positioned in the middle of one end of the water cooling plate.
Optionally, the water inlets of the first pipeline and the second pipeline are respectively located on two side edges of one end of the water cooling plate; and the water outlets of the first pipeline and the second pipeline are positioned in the middle of one end of the water cooling plate.
Optionally, the water inlets of the first pipeline and the second pipeline are located on one side of one end of the water cooling plate; and the water outlets of the first pipeline and the second pipeline are positioned on the other side edge of one end of the water cooling plate.
Optionally, the water-cooling plate is hollow to form a cavity; the first water diversion block and the second water diversion block are respectively communicated with the cavity.
Optionally, the pipes include a first pipe, a second pipe and a third pipe; the water inlets of the first pipeline, the second pipeline and the third pipeline are respectively communicated with the first water diversion block; and the water outlets of the first pipeline, the second pipeline and the third pipeline are respectively communicated with the second water distribution block.
The invention also discloses laser equipment comprising the water cooling system.
According to the water cooling system, the first water diversion block is arranged, so that water flow is diverted to different water cooling plates, and the water pressure is reduced. And, through setting up the second water diversion piece with the rivers of different water-cooling boards flow into respectively through a plurality of entrances and assemble the drainage away in the second water diversion piece, reduce the whole water pressure of water cooling system, be difficult to the explosion and leak, the security is high, and it is efficient to lead to the water.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of a water cooling system according to an embodiment of the present invention;
FIG. 2 is a top view of a water cooled panel according to an embodiment of the present invention;
FIG. 3 is another top view of a water cooled panel according to an embodiment of the present invention.
Wherein, 100, the first water diversion block; 200. a second water diversion block; 300. a water-cooling plate; 310. a pipeline; 311. a first conduit; 312. a second conduit; 313. a water inlet; 314. and (7) a water outlet.
Detailed Description
It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present invention may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
The invention is described in detail below with reference to the figures and alternative embodiments.
As shown in fig. 1 and 2, as an embodiment of the present invention, a water cooling system is disclosed, which includes a first water distribution block 100, a second water distribution block 200, and at least two water cooling plates 300; the first water diversion block 100 is used for water inflow, and the water cooling plate 300 is used for cooling a water-cooled object; the second water diversion block 200 is used for water outlet; each water cooling plate 300 is respectively communicated with the first water distribution block 100, and water entering the first water distribution block 100 respectively flows into each water cooling plate 300; the second water diversion block 200 is respectively communicated with each water cooling plate 300, and water in each water cooling plate 300 flows out of the second water diversion block 200 and is discharged from the water diversion block.
According to the water cooling system, the first water dividing block 100, the second water dividing block 200 and the at least two water cooling plates 300 are arranged, so that a plurality of outlets of the first water dividing block 100 can divide the entering water flow into different water cooling plates 300, and the water cooling plates 300 can cool the water cooling object. The water in the water cooling plate 300 flows into the second water diversion block 200 through the plurality of inlets of the second water diversion block 200 respectively to be gathered and finally discharged, and the water cooling process is completed. According to the water cooling system, the first water dividing block 100 is arranged, so that water flow is divided into different water cooling plates 300, and the water pressure is reduced. And, through setting up second water diversion block 200 with the rivers of different water-cooling boards 300 flow into respectively through a plurality of entrances and assemble and remove in second water diversion block 200, reduce the whole water pressure of water-cooling system, be difficult to blow out and leak, the security is high, and it is efficient to lead to water.
The water distribution block of the present invention is a device provided with a plurality of inlets and outlets, for example, when the first water distribution block 100 is used, one of the inlets may be used as a water inlet, the remaining inlets are water outlets, and the water outlets are communicated with the water cooling plates 300; or two or more of the ports may be used as water inlets and the remaining two or more ports may be water outlets. When the second water distribution block 200 is used, one of the ports can be used as a water outlet, and the rest ports are water inlets which are communicated with the water cooling plates 300; or two or more of the ports may be used as water inlets and the remaining two or more ports may be water outlets.
Specifically, at least two pipelines 310 which are not communicated with each other are arranged in the water cooling plate 300; the water inlets 313 of the pipelines 310 are respectively communicated with the first water diversion blocks 100; the water outlets 314 of the pipelines 310 are respectively communicated with the second water dividing block 200. In this scheme, set up two at least pipelines 310 that do not communicate with each other, during at least two pipelines 310 were introduced respectively to the water of first water diversion piece 100, after the water of first water diversion piece 100 passed through a plurality of delivery ports, by the reposition of redundant personnel respectively to different pipelines 310 in, reduce water pressure, improve the security. In other embodiments, the water-cooling plate 300 may be hollow, and directly form a cavity, that is, the water-cooling plate 300 is hollow to form a cavity; the first water diversion block 100 and the second water diversion block 200 are respectively communicated with the cavity. When water-cooling board 300 directly formed the cavity, water entered into water-cooling board 300 after first minute water piece 100 shunts, and at this moment, the export of first minute water piece 100 is because there are a plurality ofly, and the water pressure in every exit is shared, and water pressure is little, is difficult to explode the pipe and leaks, and the security is high. The water-cooling plate 300 is hollow to form a cavity, water flow can be fully distributed on the water-cooling plate 300 to a large extent, and the water-cooling effect is good.
More specifically, the water-cooling plate 300 is provided therein with a first duct 311 and a second duct 312; the water inlets 313 of the first pipeline 311 and the second pipeline 312 are respectively communicated with the first water diversion block 100; the water outlets 314 of the first pipeline 311 and the second pipeline 312 are respectively communicated with the second water diversion block 200. In the scheme, the first pipeline 311 and the second pipeline 312 which are not communicated with each other are arranged, water of the first water diversion block 100 is introduced through the first pipeline 311 and the second pipeline 312 respectively, and after the water of the first water diversion block 100 passes through the plurality of water outlets 314, the water is diverted into the first pipeline 311 and the second pipeline 312 respectively, so that the water pressure is reduced, the safety is improved, and the structure is simple. In other embodiments, 3 or more than 3 pipes 310 may be provided.
Further, the water inlet 313 and the water outlet 314 of the first pipe 311 and the second pipe 312 are located at the same end of the water-cooling plate 300. In the present embodiment, the water inlet 313 and the water outlet 314 of the first pipeline 311 and the second pipeline 312 are located at the same end of the water cooling plate 300, which facilitates the connection of the pipeline 310 between the first water diversion block 100, the second water diversion block 200 and the water cooling plate by the worker. Meanwhile, the water temperature at the water inlet 313 is lower, the water temperature at the water outlet 314 is higher, the water inlet 313 and the water outlet 314 are arranged at the same end of the water cooling plate 300, the temperature at the end of the water cooling plate can be balanced, the overall temperature of the water cooling plate is more balanced, and the cooling effect is more balanced.
More specifically, the water outlets 314 of the first and second pipes 311 and 312 are respectively located on two sides of one end of the water-cooling plate 300; the water inlet 313 of the first and second pipes 311 and 312 is located at the middle of one end of the water cooling plate 300, i.e. the water inlet 313 is located between the water outlets 314. In this scheme, as shown in fig. 2, water inlet 313 and delivery port 314 are located same end, and delivery port 314 is located both sides limit, and water inlet 313 is located the centre of water-cooling board 300 one end, and water inlet 313 gets into from the middle zone of cold water board, and the rivers temperature that just flow in is lower to for at the side, the region that carries out heat exchange after the inflow is also big, can be fast with the cooling of cold water board, takes away the heat of cold water board, and it is effectual to cool down. In other embodiments, the water inlets 313 of the first pipeline 311 and the second pipeline 312 may be respectively located on two sides of one end of the water-cooling plate 300; the water outlet 314 of the first pipe 311 and the second pipe 312 is located in the middle of one end of the water cooling plate 300, i.e. the water outlet 314 is located between the water inlets 313. In this embodiment, as shown in fig. 3, the water outlet 314 is located in the middle area of one end of the cold water plate, the water inlet 313 is located on both sides, the water flow temperature on both sides is lower, and the cooling effect is better. When the main cooling position of the water-cooling object corresponds to the two sides of the cold water plate, the scheme of the embodiment can be adopted, the temperature can be more pertinently cooled, and the cooling effect is good. In another embodiment, the water inlet 313 of the first pipe 311 and the second pipe 312 may be located at one side of one end of the water cooling plate 300; the water outlets 314 of the first and second pipes 311 and 312 are located at the other side of one end of the water-cooling plate 300. When the main cooling position of the water-cooled object corresponds to the water inlet 313 of the first pipeline 310 and the second pipeline 312, the scheme of the embodiment can be adopted, the temperature can be cooled more specifically, and the cooling effect is good.
Specifically, the first pipe 311 and the second pipe 312 are arranged in the water-cooling plate 300 in a bent manner. In the scheme, as shown in fig. 2, the first pipeline 311 and the second pipeline 312 are arranged in a bent manner, and the contact area between the first pipeline 311 and the second pipeline 312 is large, so that the cooling effect is good. In other embodiments, a plurality of tubes 310 may be provided, each tube 310 being arranged straight side by side in the water-cooling plate 300.
In the question of which end of the cold water plate the water inlet 313 and the water outlet 314 are specifically arranged, in other embodiments, the water inlet 313 of the first pipeline 311 and the second pipeline 312 is arranged at one end of the cold water plate 300, and the water outlet 314 of the first pipeline 311 and the second pipeline 312 is arranged at the other end of the cold water plate 300. In this scheme, water inlet 313 and delivery port 314 set up at relative both ends, and is more smooth and easy when the rivers circulate, and the water resistance is little, and water pressure is little, is difficult to explode the pipe and leak, and the security is high.
For a specific number of conduits 310, in another embodiment, the conduits 310 include a first conduit 311, a second conduit 312, and a third conduit 310; the water inlets 313 of the first pipeline 311, the second pipeline 312 and the third pipeline 310 are respectively communicated with the first water diversion block 100; the water outlets 314 of the first pipeline 311, the second pipeline 312 and the third pipeline 310 are respectively communicated with the second water diversion block 200. In this embodiment, 3 pipes 310 are arranged in the water-cooling plate 300, so that the partial pressure effect is good, the cooling effect is good, and the structure is not too complex. More specifically, the first, second and third pipes 311, 312 and 310 are arranged side by side in the water-cooling plate 300, and the arrangement is simple.
As another embodiment of the present invention, there is disclosed a laser apparatus including the water cooling system as described above. The laser device in this embodiment has adopted the water cooling system described above, and the water cooling system is through setting up first water diversion block 100, second water diversion block 200 and two piece at least water-cooling plates 300, and a plurality of exports of first water diversion block 100 can be shunted the rivers that get into to different water-cooling plates 300 for water-cooling plates 300 can cool down the water-cooling object. The water in the water cooling plate 300 flows into the second water diversion block 200 through the plurality of inlets of the second water diversion block 200 respectively to be gathered and finally discharged, and the water cooling process is completed. According to the water cooling system, the first water dividing block 100 is arranged, so that water flow is divided into different water cooling plates 300, and the water pressure is reduced. And, through setting up second water diversion block 200 with the rivers of different water-cooling boards 300 flow into respectively through a plurality of entrances and assemble and remove in second water diversion block 200, reduce the whole water pressure of water-cooling system, be difficult to blow out and leak, the security is high, and it is efficient to lead to water.
The foregoing is a more detailed description of the invention in connection with specific alternative embodiments, and the practice of the invention should not be construed as limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A water cooling system is characterized by comprising a first water dividing block, a second water dividing block and at least two water cooling plates; the first water diversion block is used for water inflow, and the water cooling plate is used for cooling a water-cooled object; the second water diversion block is used for yielding water; each water cooling plate is respectively communicated with the first water dividing block, and water entering the first water dividing block flows into each water cooling plate; the second water diversion block is respectively communicated with each water cooling plate, and water in each water cooling plate flows out of the second water diversion block and is discharged from the water diversion block.
2. The water cooling system of claim 1, wherein at least two pipes are disposed in the water cooling plate, wherein the pipes are not communicated with each other; the water inlets of the pipelines are respectively communicated with the first water diversion blocks; and the water outlets of the pipelines are respectively communicated with the second water distribution block.
3. The water cooling system of claim 2, wherein the conduit comprises a first conduit and a second conduit; the water inlets of the first pipeline and the second pipeline are respectively communicated with the first water diversion block; and the water outlets of the first pipeline and the second pipeline are respectively communicated with the second water distribution block.
4. The water cooling system of claim 3, wherein the water inlet and outlet of the first and second conduits are located at the same end of the water cooling plate.
5. The water cooling system as claimed in claim 4, wherein the water outlets of the first and second pipes are respectively located at two sides of one end of the water cooling plate; and the water inlets of the first pipeline and the second pipeline are positioned in the middle of one end of the water cooling plate.
6. The water cooling system as claimed in claim 4, wherein the water inlets of the first and second pipes are respectively located at two sides of one end of the water cooling plate; and the water outlets of the first pipeline and the second pipeline are positioned in the middle of one end of the water cooling plate.
7. The water cooling system as claimed in claim 4, wherein the water inlets of the first and second pipes are located at one side of one end of the water cooling plate; and the water outlets of the first pipeline and the second pipeline are positioned on the other side edge of one end of the water cooling plate.
8. The water cooling system of claim 1, wherein said water cooling plate is hollow forming a cavity; the first water diversion block and the second water diversion block are respectively communicated with the cavity.
9. The water cooling system of claim 2, wherein the conduits include a first conduit, a second conduit, and a third conduit; the water inlets of the first pipeline, the second pipeline and the third pipeline are respectively communicated with the first water diversion block; and the water outlets of the first pipeline, the second pipeline and the third pipeline are respectively communicated with the second water distribution block.
10. A laser apparatus comprising a water cooling system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110780987.3A CN113612105A (en) | 2021-07-09 | 2021-07-09 | Water cooling system and laser equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110780987.3A CN113612105A (en) | 2021-07-09 | 2021-07-09 | Water cooling system and laser equipment |
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| Publication Number | Publication Date |
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| CN113612105A true CN113612105A (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110780987.3A Pending CN113612105A (en) | 2021-07-09 | 2021-07-09 | Water cooling system and laser equipment |
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| CN (1) | CN113612105A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205160350U (en) * | 2015-11-27 | 2016-04-13 | 中冶南方（武汉）自动化有限公司 | Special converter liquid cooling system of jack -up |
| CN108426082A (en) * | 2018-05-11 | 2018-08-21 | 苏州胜璟电磁科技有限公司 | A kind of electromagnetic valve device |
| CN110364917A (en) * | 2018-04-11 | 2019-10-22 | 深圳联品激光技术有限公司 | A kind of laser and cooling device |
| CN210576061U (en) * | 2019-07-29 | 2020-05-19 | 上海友升铝业有限公司 | Parallel water-cooling battery frame bottom plate with reinforcing plate and water-cooling plate fixed through friction stir welding |
| CN212676374U (en) * | 2020-08-24 | 2021-03-09 | 广西城市职业大学 | Parallel battery module water cooling plant suitable for aluminium frame box |
-
2021
- 2021-07-09 CN CN202110780987.3A patent/CN113612105A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205160350U (en) * | 2015-11-27 | 2016-04-13 | 中冶南方（武汉）自动化有限公司 | Special converter liquid cooling system of jack -up |
| CN110364917A (en) * | 2018-04-11 | 2019-10-22 | 深圳联品激光技术有限公司 | A kind of laser and cooling device |
| CN108426082A (en) * | 2018-05-11 | 2018-08-21 | 苏州胜璟电磁科技有限公司 | A kind of electromagnetic valve device |
| CN210576061U (en) * | 2019-07-29 | 2020-05-19 | 上海友升铝业有限公司 | Parallel water-cooling battery frame bottom plate with reinforcing plate and water-cooling plate fixed through friction stir welding |
| CN212676374U (en) * | 2020-08-24 | 2021-03-09 | 广西城市职业大学 | Parallel battery module water cooling plant suitable for aluminium frame box |
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Address after: 518000 No. 35, Cuijing Road, Pingshan New District, Shenzhen, Guangdong Applicant after: Ona Technology (Shenzhen) Group Co.,Ltd. Address before: 518000 No. 35, Cuijing Road, Pingshan New District, Shenzhen, Guangdong Applicant before: O-NET COMMUNICATIONS (SHENZHEN) Ltd. |
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Application publication date: 20211105 |
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