CN112421322B - Communication power supply controlled by electromagnetic principle - Google Patents
Communication power supply controlled by electromagnetic principle Download PDFInfo
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- CN112421322B CN112421322B CN202011258436.2A CN202011258436A CN112421322B CN 112421322 B CN112421322 B CN 112421322B CN 202011258436 A CN202011258436 A CN 202011258436A CN 112421322 B CN112421322 B CN 112421322B
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- 238000004891 communication Methods 0.000 title claims abstract description 14
- 238000005192 partition Methods 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/02—Intermediate parts for distributing energy to two or more circuits in parallel, e.g. splitter
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention discloses a communication power supply controlled by utilizing an electromagnetic principle, which comprises a power supply box; the first partition plate and the second partition plate divide the interior of the power box into a wire inlet chamber, an adjusting chamber and a wire outlet chamber from left to right in sequence; a transformer is installed in the wire inlet chamber, a plurality of regulators are installed in the regulating chamber, and a plurality of plug mechanisms are installed in the wire outlet chamber; the regulator comprises a bracket and a sliding rheostat, an adjusting screw rod is rotatably installed at the bottom of the bracket, an adjusting threaded sleeve is connected to the adjusting screw rod in a threaded manner, and the upper side of the adjusting threaded sleeve is connected with the bracket in a sliding manner; the sliding rheostat is fixedly connected with the support, and a sliding connector of the sliding rheostat is fixedly connected with the adjusting threaded sleeve; the plug mechanism comprises a card holder and a plug which is slidably arranged in the card holder. The invention completes the rapid voltage division and current division of the high-voltage incoming line, ensures the safety and stability of the connection of the wiring, ensures the working efficiency and improves the safety.
Description
Technical Field
The invention relates to the technical field of power supplies, in particular to a communication power supply controlled by utilizing an electromagnetic principle.
Background
The transformer is a device for changing an ac voltage by using the principle of electromagnetic induction, and its main components are a primary coil, a secondary coil, and an iron core (magnetic core).
The main functions of the transformer are: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), and the like, and can be classified into: power transformers and special transformers.
At present, with the development of science and technology and the progress of society, the global process influences the aspects of people's life, and the rated voltage of machinery produced in each country is different, leads to need to prepare different potential transformers utensil when using at home to guarantee normal use, increased the inconvenience, and the variable voltage automatic control circuit of present stage, the connecting wire is all unified, under different voltages, very big increase the possibility that danger takes place.
Therefore, in view of the above situation, there is a need to develop a communication power supply controlled by electromagnetic principle to overcome the shortcomings of the current practical application.
Disclosure of Invention
The present invention is directed to a communication power supply controlled by electromagnetic principle to solve the above-mentioned problems of the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a communication power supply controlled by utilizing an electromagnetic principle comprises a power supply box; a first partition plate and a second partition plate are arranged inside the power box, and the first partition plate and the second partition plate divide the inside of the power box into a wire inlet chamber, an adjusting chamber and a wire outlet chamber from left to right in sequence; a transformer is installed in the wire inlet chamber, a plurality of regulators are installed in the regulating chamber, and a plurality of plug mechanisms are installed in the wire outlet chamber; the regulator comprises a support and a sliding rheostat, an adjusting screw rod is rotatably mounted at the bottom of the support, an adjusting threaded sleeve is connected to the adjusting screw rod in a threaded manner, and the upper side of the adjusting threaded sleeve is connected with the support in a sliding manner; the sliding rheostat is fixedly connected with the support, and a sliding connector of the sliding rheostat is fixedly connected with the adjusting threaded sleeve; the plug mechanism comprises a clamping seat and a plug which is slidably mounted inside the clamping seat, the plug is electrically connected with the weak current inlet wire, a plurality of conductive columns are uniformly mounted at the bottom of the clamping seat, and the conductive columns are electrically connected with a low-voltage connector arranged outside the power box.
As a further scheme of the invention: the transformer comprises a shell, a transformer primary coil and a plurality of transformer secondary coils are respectively arranged on the left side and the right side of the interior of the shell, and an iron core is arranged between the transformer primary coil and the transformer secondary coils.
As a further scheme of the invention: and a high-voltage plug is arranged on the power box body and is electrically connected with the primary coil of the transformer through a high-voltage wire inlet.
As a further scheme of the invention: the box is located the indoor portion of inlet wire and still is provided with dry box.
As a further scheme of the invention: the fixed joint of the slide rheostat is electrically connected with a low-voltage wire outlet through a connecting wire, and the low-voltage wire outlet is electrically connected with a secondary coil of the transformer; the sliding connector of the sliding rheostat is electrically connected with the plug through a weak current inlet wire.
As a further scheme of the invention: the support is fixedly provided with a driving motor, the output end of the driving motor is in transmission connection with the adjusting screw rod through a bevel gear set, the support is further fixedly provided with a control box, and the control box is electrically connected with the driving motor.
As a further scheme of the invention: two sliding grooves are symmetrically formed in the clamping seat and positioned on two sides of the plug, sliding blocks are slidably mounted in the sliding grooves, the sliding blocks are fixedly connected with the plug, and one side of each sliding block is fixedly connected with the corresponding sliding groove through a connecting spring; the other side fixed mounting of slider has the iron plate, spout internally mounted has the electro-magnet of mutually supporting with the iron plate.
As a further scheme of the invention: and a weak power supply is fixedly arranged on the outer side of the power box and is electrically connected with the electromagnet through a weak current control line.
Compared with the prior art, the invention has the beneficial effects that: the interior of the power box is divided into the wire inlet chamber, the adjusting chamber and the wire outlet chamber, the transformer is arranged in the wire inlet chamber, the plurality of adjusters are arranged in the adjusting chamber, the plurality of plugs are arranged in the wire outlet chamber, rapid voltage division and shunting of high-voltage wire inlet are completed, safety and stability of connection are guaranteed, working efficiency is guaranteed, and safety is improved.
Drawings
Fig. 1 is a schematic diagram of a communication power supply controlled by an electromagnetic principle.
Fig. 2 is a schematic structural diagram of a transformer in a communication power supply controlled by using an electromagnetic principle.
Fig. 3 is a schematic diagram of a regulator in a communication power supply controlled by using an electromagnetic principle.
Fig. 4 is a schematic structural diagram of a plug mechanism in a communication power supply controlled by using an electromagnetic principle.
In the figure: 1-power box, 101-first partition board, 102-second partition board, 103-high voltage plug, 104-drying box, 105-weak power supply, 106-low voltage joint, 2-transformer, 201-high voltage wire inlet, 202-low voltage wire outlet, 203-connecting wire, 204-transformer primary coil, 205-shell, 206-iron core, 207-transformer secondary coil, 3-regulator, 301-bracket, 302-regulating screw, 303-regulating screw sleeve, 304-slide rheostat, 305-slide joint, 306-weak current wire inlet, 307-control box, 308-driving motor, 309-bevel gear set, 4-plug mechanism, 401-weak current control wire, 402-conductive column, 403-connecting spring, 103-weak current plug, 404-slide block, 405-iron block, 406-electromagnet, 407-plug.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Example 1
Referring to fig. 1 to 3, in an embodiment of the present invention, a communication power supply controlled by an electromagnetic principle includes a power box 1; a first partition plate 101 and a second partition plate 102 are arranged inside the power box 1, and the first partition plate 101 and the second partition plate 102 divide the inside of the power box 1 into a wire inlet chamber, an adjusting chamber and a wire outlet chamber from left to right in sequence; the transformer 2 is installed in the inlet wire chamber and used for converting a high-voltage inlet wire into a plurality of low-voltage outlet wires, the regulators 3 are installed in the regulating chamber and used for regulating low-voltage outlet current, and the plug mechanisms 4 are installed in the outlet wire chamber and used for being connected with loads.
The transformer 2 comprises a housing 205, a transformer primary coil 204 and a plurality of transformer secondary coils 207 are respectively installed on the left side and the right side inside the housing 205, and an iron core 206 is arranged between the transformer primary coil 204 and the transformer secondary coils 207.
Specifically, in this embodiment, a high-voltage plug 103 is installed on the box body of the power box 1, and the high-voltage plug 103 is electrically connected with a primary coil 204 of the transformer through a high-voltage line incoming 201; further, in this embodiment, the box body is located inside the inlet wire chamber and is further provided with a drying box 104 for keeping the inside of the inlet wire chamber dry.
The adjuster 3 comprises a support 301 and a sliding rheostat 304, an adjusting screw 302 is rotatably mounted at the bottom of the support 301, an adjusting threaded sleeve 303 is connected to the adjusting screw 302 in a threaded manner, and the upper side of the adjusting threaded sleeve 303 is connected with the support 301 in a sliding manner; the slide rheostat 304 is fixedly connected with the support 301, a slide connector 305 of the slide rheostat 304 is fixedly connected with the adjusting screw sleeve 303, and the adjusting screw sleeve 303 is driven to slide and connect at the bottom of the support 301 by driving the adjusting screw rod 302 to rotate, so that the slide connector 305 is driven to slide on the slide rheostat 304;
specifically, in this embodiment, the fixed joint of the sliding rheostat 304 is electrically connected to the low-voltage line outgoing line 202 through the connection line 203, and the low-voltage line outgoing line 202 is electrically connected to the secondary coil 207 of the transformer; the sliding connector 305 of the sliding rheostat 304 is also electrically connected with the plug mechanism 4 through a weak current incoming line 306;
further, in this embodiment, a driving motor 308 is fixedly installed on the bracket 301, an output end of the driving motor 308 is in transmission connection with the adjusting screw 302 through a bevel gear set 309, a control box 307 is also fixedly installed on the bracket 301, and the control box 307 is electrically connected with the driving motor 308 and is used for controlling the driving motor 308 to rotate, so that the resistance value of the sliding rheostat 304 is adjusted, and the outgoing current is changed.
Example 2
Referring to fig. 1 to 3, in an embodiment of the present invention, a communication power supply controlled by an electromagnetic principle includes a power box 1; a first partition plate 101 and a second partition plate 102 are arranged inside the power box 1, and the first partition plate 101 and the second partition plate 102 divide the inside of the power box 1 into a wire inlet chamber, an adjusting chamber and a wire outlet chamber from left to right in sequence; a transformer 2 is arranged in the wire inlet chamber and used for converting high-voltage inlet wires into multiple low-voltage outlet wires, a plurality of regulators 3 are arranged in the regulating chamber and used for regulating low-voltage outlet current, and a plurality of plug mechanisms 4 are arranged in the wire outlet chamber and used for connecting loads;
the transformer 2 comprises a shell 205, a transformer primary coil 204 and a plurality of transformer secondary coils 207 are respectively installed on the left side and the right side inside the shell 205, and an iron core 206 is arranged between the transformer primary coil 204 and the transformer secondary coils 207;
specifically, in this embodiment, a high voltage plug 103 is installed on the box body of the power box 1, and the high voltage plug 103 is electrically connected to the primary coil 204 of the transformer through a high voltage line incoming line 201;
further, in this embodiment, the box body is further provided with a drying box 104 inside the wire inlet chamber, for keeping the inside of the wire inlet chamber dry;
the adjuster 3 comprises a support 301 and a sliding rheostat 304, an adjusting screw 302 is rotatably mounted at the bottom of the support 301, an adjusting threaded sleeve 303 is connected to the adjusting screw 302 in a threaded manner, and the upper side of the adjusting threaded sleeve 303 is connected with the support 301 in a sliding manner; the slide rheostat 304 is fixedly connected with the support 301, a slide connector 305 of the slide rheostat 304 is fixedly connected with the adjusting screw sleeve 303, and the adjusting screw sleeve 303 is driven to slide and connect at the bottom of the support 301 by driving the adjusting screw rod 302 to rotate, so that the slide connector 305 is driven to slide on the slide rheostat 304;
specifically, in this embodiment, the fixed joint of the sliding rheostat 304 is electrically connected to the low-voltage line outgoing line 202 through the connection line 203, and the low-voltage line outgoing line 202 is electrically connected to the secondary coil 207 of the transformer; the sliding connector 305 of the sliding rheostat 304 is also electrically connected with the plug mechanism 4 through a weak current incoming line 306;
further, in this embodiment, a driving motor 308 is fixedly installed on the bracket 301, an output end of the driving motor 308 is in transmission connection with the adjusting screw 302 through a bevel gear set 309, a control box 307 is also fixedly installed on the bracket 301, and the control box 307 is electrically connected with the driving motor 308 and is used for controlling the driving motor 308 to rotate, so that the resistance value of the sliding rheostat 304 is adjusted, and the outgoing current is changed.
Referring to fig. 4, the difference between the present embodiment and embodiment 1 is:
the plug mechanism 4 comprises a card seat and a plug 407 slidably mounted in the card seat, the plug 407 is electrically connected with the weak current inlet wire 306, a plurality of conductive columns 402 are uniformly mounted at the bottom of the card seat, and the conductive columns 402 are electrically connected with the low-voltage connector 106 arranged at the outer side of the power box 1;
two sliding grooves are symmetrically formed in the clamping seat and positioned on two sides of the plug 407, a sliding block 404 is slidably mounted in each sliding groove, the sliding block 404 is fixedly connected with the plug 407, and one side of the sliding block 404 is fixedly connected with the sliding grooves through a connecting spring 403; an iron block 405 is fixedly installed on the other side of the sliding block 404, an electromagnet 406 which is matched with the iron block 405 is installed inside the sliding groove, the sliding block 404 is attracted inside the sliding groove after the electromagnet 406 is electrified, the plug 407 is driven to be inserted into the conductive column 402, and the electrical connection among the weak current inlet wire 306, the plug 407, the conductive column 402 and the low-voltage connector 106 is completed;
specifically, in this embodiment, the weak power source 105 is fixedly mounted on the outer side of the power box 1, and the weak power source 105 is electrically connected to the electromagnet 406 through a weak current control line 401.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (1)
1. A communication power supply controlled by the electromagnetic principle, comprising a power supply box (1);
a first partition plate (101) and a second partition plate (102) are arranged inside the power box (1), and the first partition plate (101) and the second partition plate (102) divide the inside of the power box (1) into a wire inlet chamber, an adjusting chamber and a wire outlet chamber from left to right in sequence; the wire inlet chamber is characterized in that a transformer (2) is installed inside the wire inlet chamber, a plurality of regulators (3) are installed inside the regulating chamber, and a plurality of plug mechanisms (4) are installed inside the wire outlet chamber;
the adjuster (3) comprises a support (301) and a sliding rheostat (304), an adjusting screw rod (302) is rotatably mounted at the bottom of the support (301), an adjusting threaded sleeve (303) is connected to the adjusting screw rod (302) in a threaded manner, the upper side of the adjusting threaded sleeve (303) is in sliding connection with the support (301), the sliding rheostat (304) is fixedly connected with the support (301), and a sliding connector (305) of the sliding rheostat (304) is fixedly connected with the adjusting threaded sleeve (303);
the plug mechanism (4) comprises a clamping seat and a plug (407) which is slidably mounted in the clamping seat, the plug (407) is electrically connected with the weak current inlet wire (306), a plurality of conductive columns (402) are uniformly mounted at the bottom of the clamping seat, and the conductive columns (402) are electrically connected with a low-voltage connector (106) arranged on the outer side of the power box (1);
the transformer (2) comprises a shell (205), a transformer primary coil (204) and a plurality of transformer secondary coils (207) are respectively installed on the left side and the right side inside the shell (205), and an iron core (206) is arranged between the transformer primary coil (204) and the transformer secondary coils (207);
a high-voltage plug (103) is mounted on the power box body of the power box (1), and the high-voltage plug (103) is electrically connected with a primary coil (204) of the transformer through a high-voltage wire inlet (201);
a drying box (104) is also arranged in the wire inlet chamber of the power box (1);
the fixed joint of the slide rheostat (304) is electrically connected with the low-voltage wire outlet (202) through a connecting wire (203), and the low-voltage wire outlet (202) is electrically connected with the secondary coil (207) of the transformer; the sliding connector (305) of the sliding rheostat (304) is also electrically connected with the plug (407) through a weak current inlet wire (306);
the support (301) is fixedly provided with a driving motor (308), the output end of the driving motor (308) is in transmission connection with the adjusting screw rod (302) through a bevel gear set (309), the support (301) is also fixedly provided with a control box (307), and the control box (307) is electrically connected with the driving motor (308);
two sliding grooves are symmetrically formed in the clamping seat and positioned on two sides of the plug (407), a sliding block (404) is slidably mounted in each sliding groove, the sliding block (404) is fixedly connected with the plug (407), and one side of the sliding block (404) is fixedly connected with the sliding grooves through a connecting spring (403); an iron block (405) is fixedly mounted on the other side of the sliding block (404), and an electromagnet (406) matched with the iron block (405) is mounted inside the sliding chute;
the weak power supply (105) is fixedly mounted on the outer side of the power supply box (1), and the weak power supply (105) is electrically connected with the electromagnet (406) through a weak current control line (401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011258436.2A CN112421322B (en) | 2020-11-11 | 2020-11-11 | Communication power supply controlled by electromagnetic principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011258436.2A CN112421322B (en) | 2020-11-11 | 2020-11-11 | Communication power supply controlled by electromagnetic principle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112421322A CN112421322A (en) | 2021-02-26 |
| CN112421322B true CN112421322B (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011258436.2A Active CN112421322B (en) | 2020-11-11 | 2020-11-11 | Communication power supply controlled by electromagnetic principle |
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| CN (1) | CN112421322B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117913943B (en) * | 2024-01-05 | 2024-06-14 | 浙江天能电池(江苏)有限公司 | Lithium battery voltage monitoring device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201177A (en) * | 1922-07-20 | 1923-11-15 | Vickers Electrical Co Ltd | Improvements in or relating to means for the coupling of alternating current dynamo-electric machines in parallel |
| GB492887A (en) * | 1936-01-24 | 1938-09-26 | Siemens Ag | Improvements in and relating to moving contact electric current converters |
| GB537730A (en) * | 1938-05-27 | 1941-07-03 | Igranic Electric Co Ltd | Improvements in or relating to voltage regulators for lighting systems |
| GB571057A (en) * | 1943-08-31 | 1945-08-03 | English Electric Co Ltd | Electric motor control systems |
| GB622192A (en) * | 1944-11-16 | 1949-04-28 | British Thomson Houston Co Ltd | Improvements in and relating to slip regulators for motor generator sets |
| GB683514A (en) * | 1950-02-27 | 1952-11-26 | British Thomson Houston Co Ltd | Improvements in and relating to regulating apparatus for dynamo electric machines |
| CN101834043A (en) * | 2010-03-30 | 2010-09-15 | 于洋 | Electromagnetic control slide rheostat |
| CN105633742B (en) * | 2016-03-22 | 2019-01-04 | 安徽工程大学 | A kind of safety socket and safety plug engaged therewith |
| CN209001845U (en) * | 2018-09-14 | 2019-06-18 | 北京盟创科技有限公司 | A kind of power supply of controllable voltage |
| CN111834807A (en) * | 2020-08-08 | 2020-10-27 | 王慧 | Electromagnetic type electric shock prevention safety socket |
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Address after: 361100 unit 201, No. 46, Siming Industrial Park, Meixi Road, Tong'an District, Xiamen City, Fujian Province Patentee after: Xiamen Kesite Electronics Co.,Ltd. Country or region after: China Address before: 361100 unit 201, No. 46, Siming Industrial Park, Meixi Road, Tong'an District, Xiamen City, Fujian Province Patentee before: XIAMEN CASTEC ELECTRONIC INDUSTRY Co.,Ltd. Country or region before: China |
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