CN110493395B - Mobile terminal - Google Patents
Mobile terminal Download PDFInfo
- Publication number
- CN110493395B CN110493395B CN201910727402.4A CN201910727402A CN110493395B CN 110493395 B CN110493395 B CN 110493395B CN 201910727402 A CN201910727402 A CN 201910727402A CN 110493395 B CN110493395 B CN 110493395B
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- Prior art keywords
- mobile terminal
- bracket
- contact
- hole
- shell
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0277—Details of the structure or mounting of specific components for a printed circuit board assembly
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention provides a mobile terminal which comprises a shell, a rear shell, a main board and a contact joint. The rear shell is provided with a first through hole. The contact joint is fixedly arranged on one side of the rear shell facing the shell. The contact joint comprises a bracket and a plurality of conducting strips embedded in the bracket. The support is provided with a plurality of spaced via holes. The conductive sheets are respectively covered on the corresponding through holes to form a plurality of contacts. A plurality of conducting strips all are connected to the mainboard electrically, and a plurality of contacts all expose in first through-hole to supply the external equipment to connect, thereby realize mainboard and external equipment's electricity and be connected, and then integrate the function of external equipment on the mainboard, make mobile terminal realize the integration of function under the restriction that does not receive inner structure, and reduce the cost that mobile terminal integrated the function. In addition, the conducting strip is embedded in the bracket and covers the through hole of the bracket to form the contact, so that the manufacturing process of the contact is simplified, the production of a contact joint is facilitated, and the precision of the contact is improved.
Description
Technical Field
The invention relates to the technical field of mobile terminals, in particular to a mobile terminal.
Background
The mobile terminal is widely applied to daily life of users and integrates various functions such as a camera function, an office function and the like. The mobile terminal has the characteristic of small volume, and the structure of the mobile terminal is limited to be used for installing the module with the corresponding function.
The market of mobile terminals is more and more intense, and the cost of mobile terminals is more and more strictly controlled. In the related art, the structure of the mobile terminal is optimized so that the volume of the mobile terminal is smaller and smaller, however, when the structure of the mobile terminal is optimized, the internal structure of the mobile terminal is limited, so that the mobile terminal cannot perform other function integration.
Disclosure of Invention
The invention aims to provide a mobile terminal, which solves the problem that the mobile terminal in the prior art cannot integrate functions due to structural limitation.
In order to solve the technical problems, the invention adopts the following technical scheme:
according to an aspect of the present invention, there is provided a mobile terminal including: a housing; the rear shell is detachably covered on the machine shell; the rear shell is provided with a first through hole; the main board is arranged on the shell and is positioned between the shell and the rear shell; the contact joint is fixedly arranged on one side of the rear shell facing the shell; the contact joint comprises a bracket and a plurality of conducting strips embedded in the bracket; the plurality of conductive sheets are electrically connected to the main board; the bracket is provided with a plurality of spaced through holes; the conducting strips are respectively covered on the corresponding via holes to form a plurality of contacts; a plurality of contacts are exposed in the first through hole for connecting with external equipment; a flexible circuit board is arranged between the contact joint and the main board; one end of the flexible circuit board is connected with the conducting strip, and the other end of the flexible circuit board is connected with the mainboard; the conducting strip comprises a butt joint part, a welding part and a connecting part; the connecting part connects the butt joint part and the welding part; the butt joint part and the welding part are arranged at intervals along the thickness direction of the bracket; the butt joint part covers the via hole; the welding part exceeds the bracket and is welded on the flexible circuit board; the bracket is integrally formed by injection molding and wraps the plurality of conducting strips, so that the welding part and the connecting part are wrapped by the bracket.
Optionally, a reinforcing plate is arranged on one side of the flexible circuit board, which is back to the contact joint; the reinforcing plate and the contact joint are respectively arranged on two sides of the flexible circuit board, and the reinforcing plate is arranged corresponding to the contact joint.
Optionally, a surface of the abutment portion is spaced from an outer side surface of the bracket.
Optionally, the surface of the welding part exceeds the surface of one side of the bracket, which faces away from the rear shell; the surface of the welding part is attached to the flexible circuit board and is welded and fixed.
Optionally, a groove is formed in one side of the bracket, which is back to the rear shell; the groove is communicated with the through hole.
Optionally, the bracket includes a base portion and a protruding portion protruding from the base portion; the base part is glued on the inner wall of the rear shell; the protruding part extends into the first through hole; the through hole penetrates through the protruding portion and is covered by the corresponding conducting strip.
Optionally, a second through hole is formed in the bottom surface of the rear shell; the mobile terminal also comprises a charging connector and a battery; the charging connector is exposed in the second through hole; the charging connector and the contact connector are connected with the battery through the mainboard.
Optionally, the first through hole is disposed on a rear side surface of the rear case and exposes the contact terminal.
According to the technical scheme, the embodiment of the invention at least has the following advantages and positive effects:
in the mobile terminal, the mainboard is arranged on the shell, the contact joint is electrically connected with the mainboard through the plurality of conducting strips, and the plurality of contacts are exposed in the first through hole for connecting with external equipment, so that the electric connection between the mainboard and the external equipment is realized, the functions of the external equipment are further integrated on the mainboard, the integration of the functions of the mobile terminal is realized without the limitation of an internal structure, and the cost for integrating the functions of the mobile terminal is reduced. In addition, the conducting strip is embedded in the bracket and covers the through hole of the bracket to form the contact, so that the manufacturing process of the contact is simplified, the production of a contact joint is facilitated, and the precision of the contact is improved.
Drawings
Fig. 1 is a perspective view of a mobile terminal of the present invention.
Fig. 2 is a front view of the mobile terminal of the present invention.
Fig. 3 is a side view of the mobile terminal of the present invention.
Fig. 4 is a rear view of the mobile terminal of the present invention.
Fig. 5 is an exploded view of the mobile terminal of the present invention.
Fig. 6 is a connection diagram of a main board of the mobile terminal of the present invention.
Fig. 7 is a block diagram of a contact terminal and a flexible circuit board of the mobile terminal of the present invention.
Fig. 8 is a partial sectional view at B in fig. 7.
Fig. 9 is a partial structural view at a in fig. 4.
Fig. 10 is a partial sectional view at C in fig. 9.
The reference numerals are explained below:
100. a mobile terminal;
1. a housing;
2. a display screen;
3. a rear housing; 31. a first through hole; 32. a second through hole;
4. a main board;
5. a battery;
6. a contact terminal; 61. a support; 611. a base part; 6111. a groove; 612. a protruding portion; 6121. a via hole; 62. a conductive sheet; 621. a docking portion; 622. welding the part; 623. a connecting portion; 63a, a contact;
7. a flexible circuit board;
8. a reinforcing plate;
9. and a charging connector.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.
Fig. 1 is a perspective view of a mobile terminal 100 of the present invention. Fig. 2 is a front view of the mobile terminal 100 of the present invention. Fig. 3 is a side view of the mobile terminal 100 of the present invention.
Referring to fig. 1 to 3, the present invention provides a mobile terminal 100. The mobile terminal 100 is mainly a mobile phone, a tablet computer, or the like. The mobile terminal 100 can be used as an independent communication tool, which is widely used in daily life of users, and integrates various functions, such as a camera function, an office function, etc., into itself. The mobile terminal 100 has a small volume and has a limited use of its own structure to mount a module for a corresponding function. The following takes a mobile phone as an example to describe the scheme of the present invention.
In the related art, the structure of the mobile terminal is optimized so that the volume of the mobile terminal is smaller and smaller, however, when the structure of the mobile terminal is optimized, the internal structure of the mobile terminal is limited, so that the mobile terminal cannot perform other function integration.
Based on the view direction of fig. 3 as a reference, a side view of the mobile terminal 100 is taken as an orientation reference, wherein the surface of the display 2 is a front side surface of the mobile terminal 100, and the surface of the rear case 3 is a rear side surface of the mobile terminal 100.
Fig. 4 is a rear view of the mobile terminal 100 of the present invention. Fig. 5 is an exploded view of the mobile terminal 100 of the present invention.
Referring to fig. 4 and 5, the mobile terminal 100 of the present invention is substantially rectangular, and mainly includes a housing 1, a display 2, a rear case 3, a main board 4, a battery 5, and a contact terminal 6. The case 1 serves as a base of the mobile terminal 100 and mainly supports other components. The casing 1 is a hollow cavity with a certain wall thickness and is of an integrally formed structure. The display 2 covers a front side surface of the casing 1 and serves as a display surface of the mobile terminal 100.
The main board 4 is mainly used for operating the instruction of the mobile terminal 100, and can receive and process the instruction input by the external device, thereby realizing that the function of the external device is integrated in the mobile terminal 100. The main board 4 is generally mounted on the housing 1 by screws and is located at the upper portion of the housing 1. The mainboard 4 is located between the casing 1 and the rear shell 3 and is protected by the outer layers of the casing 1 and the rear shell 3, so that the safety performance of the mainboard 4 is improved.
The battery 5 is mainly used for functions of the mobile terminal 100. The battery 5 is generally rectangular and is mounted in the middle of the housing 1. The battery 5 is electrically connected with the main board 4 and charges and discharges with the main board 4. When the amount of electric energy stored in the battery 5 is low, the main board 4 can supply electric energy to the battery 5 to increase the amount of electric energy stored in the battery 5.
The rear case 3 is located at the rear side of the mobile terminal 100, detachably covers the housing 1, and forms an installation area with the housing 1. Specifically, the rear case 3 is connected to the housing 1 by snap-fit or snap-fit, but not limited thereto. The rear case 3 is opened with a first through hole 31 and a second through hole 32, the first through hole 31 is opened on the rear side surface of the rear case 3, and the second through hole 32 is opened on the bottom side surface of the rear case 3, but not limited thereto.
In addition, the contact terminal 6 is fixedly arranged on one side of the rear shell 3 facing the machine shell 1 and is exposed out of the rear shell 3 for connecting with external equipment. The contact terminal 6 is provided with a plurality of contacts 63a and electrically connected to the main board 4. The plurality of contacts 63a are exposed to the rear side surface of the rear case 3 for connection of an external device, thereby achieving electrical connection of the main board 4 with the external device and further integrating the function of the external device on the main board 4, enabling integration of the function of the mobile terminal 100 without being limited by an internal structure, and reducing the cost of integrating the function of the mobile terminal 100.
Fig. 6 is a connection diagram of the main board 4 of the mobile terminal 100 of the present invention.
Referring to fig. 6, the contact terminal 6 is fixed on a side of the rear case 3 facing the housing 1 and corresponds to the first through hole 31. The contact joint 6 is connected with an external device in a butt joint mode, and the instruction of the external device is input into the mainboard 4, so that the mainboard 4 processes the instruction of the external device and enables the mobile terminal 100 to integrate the function of the external device, and further the function integration of the mobile terminal 100 is achieved. A flexible circuit board 7 is arranged between the contact joint 6 and the mainboard 4, one end of the flexible circuit board 7 is connected with the contact joint 6, the other end of the flexible circuit board 7 is connected with the mainboard 4, and instruction conduction of the contact joint 6 and the mainboard 4 is realized through the flexible circuit board 7.
Fig. 7 is a block diagram of the contact terminal 6 and the flexible circuit board 7 of the mobile terminal 100 of the present invention. Fig. 8 is a partial sectional view at B in fig. 7, mainly embodying the structure of the contact terminal 6. Fig. 9 is a partial configuration diagram of a portion a in fig. 4, and mainly shows a connection relationship of the contact terminals 6.
Referring to fig. 7 to 9, the contact terminal 6 includes a bracket 61 and a plurality of conductive sheets 62 embedded in the bracket 61, the plurality of conductive sheets 62 are poured with molten plastic in a supporting state, and the molten plastic is cooled in a mold to form the bracket 61, so that the bracket 61 is integrally injection-molded and covers the plurality of conductive sheets 62, wherein the conductive sheets 62 are combined with an injection molding process to improve the production efficiency of the contact terminal 6. By attaching the contact terminal 6 to the flexible circuit board 7, it is achieved that the contact terminal 6 and the flexible circuit board 7 form a module with respect to the mobile terminal 100, and the module facilitates production and ensures accuracy of the contacts 63 a.
FIG. 10 is a partial cross-sectional view taken at C in FIG. 9, mainly showing the structure of the bracket 61
Referring to fig. 10, the bracket 61 is stepped and includes a base portion 611 and a protrusion 612 protruding from the base portion 611. The base portion 611 is glued to the inner wall of the rear case 3 by glue, and prevents moisture from entering the inside of the mobile terminal 100 through the bracket 61 by the glue. One side of the base portion 611 facing the rear case 3 is glued to the inner wall of the rear case 3 along the edge, and one side of the base portion 611 facing away from the rear case 3 is provided with a groove 6111, the groove 6111 effectively reduces the overall weight of the bracket 61, and does not affect the function of the base portion 611, thereby reducing the weight of the mobile terminal 100.
The protrusion 612 has an outer size smaller than that of the base portion 611, and is stepped with the base portion 611. The protrusion 612 extends into the first through hole 31 of the rear case 3 and is exposed to the first through hole 31. The protrusion 612 is provided with a plurality of spaced through holes 6121. A plurality of via holes 6121 penetrate the protruding portion 612 and communicate with the groove 6111. The via 6121 is generally circular, but is not limited thereto.
The conductive sheet 62 is mainly used for electrical conduction, and is made of a conductive metal material, such as but not limited to a copper sheet. The conductive sheet 62 includes a butting portion 621, a soldering portion 622, and a connecting portion 623 connecting the butting portion 621 and the soldering portion 622. The abutting portion 621 and the welding portion 622 are disposed at an interval along the thickness direction of the bracket 61, wherein the abutting portion 621 corresponds to the protruding portion 612, the welding portion 622 corresponds to the base portion 611, and is embedded in the bracket 61 through the conductive sheet 62, so that the abutting portion 621, the welding portion 622, and the connecting portion 623 correspond to each portion of the bracket 61, the strength of the bracket 61 is further enhanced, and the stability of the contact terminal 6 is ensured.
The conductive sheets 62 cover the corresponding vias 6121, respectively, wherein the butting portion 621 corresponds to the protruding portion 612, and is mainly used for covering the vias 6121 to form the contact 63a, that is, the contact 63a is an area of the butting portion 621 corresponding to the vias 6121, is exposed in the first through hole 31, and is electrically connected to the motherboard 4, so as to implement conduction between the external device and the motherboard 4. The arrangement of the contact 63a can be appropriately adjusted according to the connector of the external device, so that the contact 63a can be butted against the connector of the external device.
Further, the surface of the butting portion 621 and the outer side surface of the holder 61 have a space therebetween so that the contact 63a does not protrude from the outer side surface of the holder 61, thereby improving the beauty of the contact terminal 6.
The soldering portion 622 corresponds to the base portion 611, and is mainly used for soldering the flexible circuit board 7 to electrically connect the contact terminal 6 with the flexible circuit board 7. The soldering portion 622 extends beyond the base portion 611 of the bracket 61 and is soldered to the flexible circuit board 7. Specifically, the surface of the welding portion 622 exceeds the surface of the bracket 61 on the side facing away from the rear case 3.
In addition, a side of the flexible circuit board 7 facing away from the contact terminal 6 is provided with a reinforcing plate 8, so that the reinforcing plate 8 and the contact terminal 6 are arranged on both sides of the flexible circuit board 7. The reinforcing plate 8 is plate-shaped, is arranged corresponding to the contact joint 6, and reinforces the connection between the contact joint 6 and the flexible circuit board 7, thereby improving the connection strength between the contact joint 6 and the flexible circuit board 7.
The mobile terminal 100 further includes a charging connector 9. The charging connector 9 is connected to the housing 1 and exposed in the second through hole 32 of the rear shell 3; the charging connector 9 and the contact connector 6 are connected with the battery 5 through the mainboard 4. Since the charging connector 9 and the contact connector 6 both belong to external connection connectors of the mobile terminal 100. When the external device is a charging source, the charging connector 9 and the contact connector 6 can be connected to the corresponding charging source, so that the main board 4 receives two charging source instructions at the same time, and controls the instructions to charge the mobile terminal 100. Further, the main board 4 controls the two charging source instructions to adjust the charging mode of the mobile terminal 100, so that the mobile terminal 100 can be charged based on the two charging sources. The mobile terminal 100 can integrate different functions with respect to corresponding external devices, which are not limited to the charging source.
According to the technical scheme, the embodiment of the invention at least has the following advantages and positive effects:
in the mobile terminal 100 of the present invention, the main board 4 is installed on the housing 1, the contact joint 6 is electrically connected to the main board 4 through the plurality of conductive sheets 62, and the plurality of contacts 63a are exposed in the first through holes 31 for connection of external devices, so as to achieve the electrical connection between the main board 4 and the external devices, and further integrate the functions of the external devices on the main board 4, so that the mobile terminal 100 achieves the integration of the functions without being limited by the internal structure, and reduces the cost of the integrated functions of the mobile terminal 100. In addition, the conductive sheet 62 is embedded in the bracket 61 and covers the via hole 6121 of the bracket 61 to form the contact 63a, so that the manufacturing process of the contact 63a is simplified, the production of the contact 6 is facilitated, and the precision of the contact 63a is improved.
While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (8)
1. A mobile terminal, comprising:
a housing;
the rear shell is detachably covered on the machine shell; the rear shell is provided with a first through hole;
the main board is arranged on the shell and is positioned between the shell and the rear shell; and
the contact joint is fixedly arranged on one side of the rear shell facing the shell; the contact joint comprises a bracket and a plurality of conducting strips embedded in the bracket; the plurality of conductive sheets are electrically connected to the main board; the bracket is provided with a plurality of spaced through holes; the conducting strips are respectively covered on the corresponding via holes to form a plurality of contacts; a plurality of contacts are exposed in the first through hole for connecting with external equipment;
a flexible circuit board is arranged between the contact joint and the main board; one end of the flexible circuit board is connected with the conducting strip, and the other end of the flexible circuit board is connected with the mainboard;
the conducting strip comprises a butt joint part, a welding part and a connecting part; the connecting part connects the butt joint part and the welding part; the butt joint part and the welding part are arranged at intervals along the thickness direction of the bracket; the butt joint part covers the via hole; the welding part exceeds the bracket and is welded on the flexible circuit board;
the bracket is integrally formed by injection molding and wraps the plurality of conducting strips, so that the welding part and the connecting part are wrapped by the bracket.
2. The mobile terminal of claim 1, wherein a side of the flexible circuit board facing away from the contact terminal is provided with a stiffener; the reinforcing plate and the contact joint are respectively arranged on two sides of the flexible circuit board, and the reinforcing plate is arranged corresponding to the contact joint.
3. The mobile terminal of claim 1, wherein a surface of the docking portion is spaced from an outer side surface of the cradle.
4. The mobile terminal according to claim 1, wherein a surface of the soldering portion exceeds a side surface of the holder facing away from the rear case; the surface of the welding part is attached to the flexible circuit board and is welded and fixed.
5. The mobile terminal of claim 1, wherein a side of the bracket facing away from the rear housing is provided with a groove; the groove is communicated with the through hole.
6. The mobile terminal of claim 1, wherein the holder includes a base portion and a protrusion protruding from the base portion; the base part is glued on the inner wall of the rear shell; the protruding part extends into the first through hole; the through hole penetrates through the protruding portion and is covered by the corresponding conducting strip.
7. The mobile terminal of claim 1, wherein the bottom surface of the rear housing defines a second through hole; the mobile terminal also comprises a charging connector and a battery; the charging connector is exposed in the second through hole; the charging connector and the contact connector are connected with the battery through the mainboard.
8. The mobile terminal of claim 7, wherein the first through hole is provided at a rear side surface of the rear case and exposes the contact terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910727402.4A CN110493395B (en) | 2019-08-07 | 2019-08-07 | Mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910727402.4A CN110493395B (en) | 2019-08-07 | 2019-08-07 | Mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110493395A CN110493395A (en) | 2019-11-22 |
| CN110493395B true CN110493395B (en) | 2021-06-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910727402.4A Active CN110493395B (en) | 2019-08-07 | 2019-08-07 | Mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110493395B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111385394A (en) * | 2020-03-04 | 2020-07-07 | 青岛海信移动通信技术股份有限公司 | Mobile terminal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784478A (en) * | 2016-12-29 | 2017-05-31 | 青岛海信移动通信技术股份有限公司 | A kind of mobile terminal |
| CN206272688U (en) * | 2016-11-22 | 2017-06-20 | 东莞市方怡电子科技有限公司 | It is a kind of defeated according to the mobile phone protection overcoat for transmitting charging junction block with magnetic connection |
| CN206323423U (en) * | 2016-12-20 | 2017-07-11 | 深圳捷仕科技有限公司 | A kind of communication terminal of double nip |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9591766B2 (en) * | 2015-02-24 | 2017-03-07 | Motorola Mobility Llc | Portable electronic device contact puck alignment |
| CN205755185U (en) * | 2016-06-29 | 2016-11-30 | 新石器龙码（北京）科技有限公司 | A kind of three anti-intelligent terminal |
| CN107317898B (en) * | 2017-08-21 | 2020-12-29 | 深圳天珑无线科技有限公司 | Mobile terminal |
-
2019
- 2019-08-07 CN CN201910727402.4A patent/CN110493395B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206272688U (en) * | 2016-11-22 | 2017-06-20 | 东莞市方怡电子科技有限公司 | It is a kind of defeated according to the mobile phone protection overcoat for transmitting charging junction block with magnetic connection |
| CN206323423U (en) * | 2016-12-20 | 2017-07-11 | 深圳捷仕科技有限公司 | A kind of communication terminal of double nip |
| CN106784478A (en) * | 2016-12-29 | 2017-05-31 | 青岛海信移动通信技术股份有限公司 | A kind of mobile terminal |
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| CN110493395A (en) | 2019-11-22 |
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Address after: No.11, Jiangxi Road, Shinan District, Qingdao, Shandong 266000 Patentee after: Qingdao Hisense Mobile Communication Technology Co.,Ltd. Address before: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee before: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY Co.,Ltd. |
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