CN110931944A - Electronic equipment integrated with millimeter wave array antenna - Google Patents
Electronic equipment integrated with millimeter wave array antenna Download PDFInfo
- Publication number
- CN110931944A CN110931944A CN201911346054.2A CN201911346054A CN110931944A CN 110931944 A CN110931944 A CN 110931944A CN 201911346054 A CN201911346054 A CN 201911346054A CN 110931944 A CN110931944 A CN 110931944A
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- antenna
- millimeter wave
- unit
- array
- metal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
Abstract
The invention discloses an electronic device integrated with a millimeter wave array antenna, which comprises a millimeter wave antenna array, a main Printed Circuit Board (PCB), a battery and a first metal middle frame, and is characterized in that: the first metal middle frame comprises a metal frame located on the appearance face of the electronic equipment and a large-area metal block playing a role in supporting and grounding, the metal frame comprises a metal frame I, a metal frame II, a metal frame III and a metal frame IV, a first double-faced groove region is arranged in the metal frame I, grooves are formed in the front face and the back face of the first double-faced groove region, a metal partition is arranged in the middle of the first double-faced groove region, the first groove region is used for setting a millimeter wave antenna array, and the millimeter wave antenna array is composed of more than two antenna units and is arranged in an array mode. The invention can realize the optimal radiation direction of the millimeter wave array antenna, avoid the performance reduction caused by the shielding of the millimeter wave array antenna by surrounding devices or the environment when a consumer uses the millimeter wave array antenna, and has simple feed and grounding realization mode and low realization cost.
Description
Technical Field
The invention relates to the field of mobile communication, in particular to electronic equipment integrated with a millimeter wave array antenna.
Background
Currently, commercial 5G (fifth generation mobile communication) including a Sub 6GHz band and a millimeter wave (millimeter wave) band is implemented in 2020 or so. The millimeter wave is an electromagnetic wave with the wavelength of millimeter level and the frequency of 30-300 GHz, has the advantages of large bandwidth and large channel capacity, and can better meet the requirement of 5G communication on large data flow. Currently, the research and development of 5G sub-6Ghz MIMO technology and millimeter wave band phased array beamforming in the intelligent terminal device have attracted people's attention.
In the terminal equipment, a conventional millimeter wave antenna directly integrates a radiating element at the rear end of a radio frequency chip stack, integrates the radiating element with a chip, and is arranged on a main Printed Circuit Board (PCB), but the radiating direction of the antenna only faces to the back of the terminal equipment and is easily shielded. If the antenna is placed around the terminal device in a standing mode, the problem of antenna radiation directivity is improved, but the challenges are brought to engineering design on how the millimeter wave antenna coexists with 2G, 3G and 4G antennas and how the millimeter wave antenna coexists with a metalized machine body.
Disclosure of Invention
The invention aims to solve the technical problem of providing electronic equipment integrated with a millimeter wave array antenna, wherein the millimeter wave array antenna is arranged in a double-sided groove area of a metal frame, the optimal radiation direction of the millimeter wave array antenna can be realized, the performance reduction caused by the shielding of the millimeter wave array antenna by surrounding devices or the environment when a consumer uses the millimeter wave array antenna can be avoided, the millimeter wave array antenna can resonate in a plurality of working frequency bands, the feeding and grounding realization mode is simple, and the realization cost is low.
The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides an integrated millimeter wave array antenna's electronic equipment, includes millimeter wave antenna array, main printed circuit board PCB, battery and first metal center, its characterized in that: the first metal middle frame comprises a metal frame located on the appearance face of the electronic equipment and a large-area metal block playing a role in supporting and grounding, the metal frame comprises a metal frame I, a metal frame II, a metal frame III and a metal frame IV, a first double-faced groove region is arranged in the metal frame I, grooves are formed in the front face and the back face of the first double-faced groove region, a metal partition is arranged in the middle of the first double-faced groove region, the first groove region is used for setting a millimeter wave antenna array, and the millimeter wave antenna array is composed of more than two antenna units and is arranged in an array mode.
Preferably, the antenna elements of the millimeter wave antenna array include slot antenna elements and coupling feed elements that correspond to each other, the slot antenna elements are disposed on the metal partition in the first groove region, and the coupling feed elements are disposed in the inner grooves of the first groove region.
Preferably, the slot antenna units are arranged in an array form and include a first slot antenna unit, a second slot antenna unit, a third slot antenna unit and a fourth slot antenna unit, and a distance is preset between the slot antenna units and four sides of the groove.
Preferably, the coupling feed unit includes a first coupling feed unit, a second coupling feed unit, a third coupling feed unit, and a fourth coupling feed unit, and is in one-to-one correspondence with the first slot antenna unit, the second slot antenna unit, the third slot antenna unit, and the fourth slot antenna unit, respectively, and the coupling feed unit and the slot antenna unit are isolated and supported by a non-conductive medium.
Preferably, the slot antenna element and the coupling feed element have a polygonal, circular or annular shape, and the polygonal shape is a triangle, a rectangle, a pentagon, or the like.
As a further improvement, a first millimeter wave chip module is further arranged in the groove on the inner side of the first double-sided groove area, the first millimeter wave chip module is connected with the main printed circuit board PCB through a flexible circuit board, and the coupling feed units are all arranged on the first millimeter wave chip module and face the slot antenna unit.
Preferably, the first millimeter wave chip module comprises a wireless transceiver, a power management integrated circuit IC, a radio frequency front-end component and a millimeter wave communication component.
As a further improvement, a first parasitic antenna unit, a second parasitic antenna unit, a third parasitic antenna unit, and a fourth parasitic antenna unit are further disposed on one side of the first double-sided groove region facing the external surface of the electronic device, and are in one-to-one correspondence with the first slot antenna unit, the second slot antenna unit, the third slot antenna unit, and the fourth slot antenna unit, respectively.
As a further improvement, the first metal middle frame further comprises a first clearance area and a second clearance area.
Preferably, the metal edge of the appearance surface of the electronic device is also used for part or all of radiators of a cellular antenna, a bluetooth antenna, a GPS antenna, an NFC antenna and a WIFI antenna.
The electronic device provided by the invention includes, but is not limited to, a mobile communication device, such as a mobile phone, a wearable device, a car networking device, an unmanned aerial vehicle, a tablet computer, a Virtual Reality (VR), an Augmented Reality (AR), and the like. One or more broken joints can exist on the four metal frames, and the whole or part of the four metal frames can also be used for partial or whole radiators of a cellular antenna, a Bluetooth antenna, a GPS antenna, an NFC antenna, a WIFI antenna and the like. The periphery of the first double-sided groove region in the metal frame can be continuous metal, and can also be a non-closed region with one or more break points at any position.
The millimeter wave array antenna has the advantages that 1, the millimeter wave array antenna is arranged in the double-sided groove area of the metal frame, the optimal radiation direction of the millimeter wave array antenna can be realized, and the performance reduction caused by the shielding of the millimeter wave array antenna by surrounding devices or the environment when a consumer uses the millimeter wave array antenna is avoided. 2. The millimeter wave array antenna can coexist with part or all of radiators such as a cellular antenna, a bluetooth antenna, a GPS antenna, an NFC antenna, and a WIFI antenna, so that the space utilization efficiency is improved, and the extra antenna setting space is reduced. 3. The first double-sided groove area is internally provided with a metal partition instead of being completely hollowed, and the metal of the metal frame keeps continuous. Therefore, the impedance influence on a cellular antenna, a Bluetooth antenna, a GPS antenna, an NFC antenna, a WIFI antenna and the like sharing the metal frame is small. 4. Each antenna unit of the millimeter wave array antenna is composed of a feed unit, a slot coupling unit and a parasitic unit and can resonate in a plurality of working frequency bands. The parasitic element can play a role in guiding, and the antenna gain is improved. 5. The millimeter wave chip module is close to the millimeter wave array antenna, so that the signal loss is small. The processing is simple, the feeding and grounding implementation mode is simple, and the implementation cost is low.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Fig. 3 is a schematic view of a metal frame i according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a millimeter wave array antenna unit according to an embodiment of the present invention.
Fig. 5 is a cross-sectional view of a millimeter wave array antenna according to an embodiment of the present invention.
The invention is further described below with reference to the accompanying drawings.
Detailed Description
Referring to the drawings, an electronic device integrating a millimeter wave array antenna comprises a millimeter wave antenna array 20, a main printed circuit board PCB30, a battery 40 and a first metal middle frame 11, wherein the first metal middle frame 11 comprises a metal frame located on the appearance surface of the electronic device, a large-area metal block for supporting and grounding, a first clearance area 115 and a second clearance area 116. The metal frame comprises a metal frame I111, a metal frame II 112, a metal frame III 113 and a metal frame IV 114, wherein a first double-faced groove area 21 is arranged in the metal frame I111, grooves are formed in the front face and the back face of the first double-faced groove area 21, a metal partition is arranged in the middle of the first double-faced groove area, the first groove area 21 is used for arranging the millimeter wave antenna array 20, and the millimeter wave antenna array 20 is composed of more than two antenna units and is arranged in an array form.
The millimeter wave antenna array 20 may also be disposed on the metal frame ii 112, the metal frame iii 113, and the metal frame iv 114 of the metal middle frame 11, and the specific implementation method thereof is described with reference to being disposed on the metal frame i 111.
As shown in fig. 3 and 4, the antenna elements of the millimeter wave antenna array 20 include slot antenna elements and coupling feed elements, which are corresponding to each other, the slot antenna elements are disposed on the metal partition in the first groove region 21, and the coupling feed elements are disposed in the inner grooves of the first groove region 21. The slot antenna units are arranged in an array form and comprise a first slot antenna unit 220, a second slot antenna unit 221, a third slot antenna unit 222 and a fourth slot antenna unit 223, and a distance is preset between the slot antenna units and the four sides of the groove. The coupling feed unit includes a first coupling feed unit 230, a second coupling feed unit 231, a third coupling feed unit 232 and a fourth coupling feed unit 233, and is respectively in one-to-one correspondence with the first slot antenna unit 220, the second slot antenna unit 221, the third slot antenna unit 222 and the fourth slot antenna unit 223, and the coupling feed unit and the slot antenna units are isolated and supported by a non-conductive medium.
The shapes of the slot antenna element and the coupling feed element include, but are not limited to, regular polygon, circle, ring or any other shapes.
A first millimeter wave chip module 240 is further disposed in the inner side groove of the first double-sided groove region 21, the first millimeter wave chip module 240 is connected to the main printed circuit board PCB30 through a flexible circuit board, and the coupling feed units are disposed on the first millimeter wave chip module 240 and face the slot antenna unit. The first millimeter wave chip module 240 includes a wireless transceiver, a power management integrated circuit IC, a radio frequency front end component, and a millimeter wave communication component.
As shown in fig. 5, a first parasitic antenna element 210, a second parasitic antenna element 211, a third parasitic antenna element 212, and a fourth parasitic antenna element 213 are further disposed on one side of the first double-sided groove region 21 facing the external surface of the electronic device 10, and respectively correspond to the first slot antenna element 220, the second slot antenna element 221, the third slot antenna element 222, and the fourth slot antenna element 223 one to one. The shape of the parasitic antenna element includes, but is not limited to, a regular polygon, a circle, a ring, or any other shape. The parasitic antenna unit and the slot antenna unit can resonate through capacitive coupling, so that the resonance bandwidth of the millimeter wave antenna is increased, a guiding effect is achieved, and the antenna gain is improved. Optionally, the non-conductive material may further hide the millimeter wave antenna array through a process such as vacuum plating, so as to achieve an optimal design of appearance. The millimeter-wave antenna array 20 may also have multiple layers of parasitic elements.
The metal edge of the appearance surface of the electronic equipment can also be used for part or all of radiators of a cellular antenna, a Bluetooth antenna, a GPS antenna, an NFC antenna and a WIFI antenna.
Claims (10)
1. An electronic device integrated with a millimeter wave array antenna, comprising a millimeter wave antenna array (20), a main Printed Circuit Board (PCB) (30), a battery (40) and a first metal middle frame (11), characterized in that: first metal center (11) including the metal frame that is located the electronic equipment outward appearance face, play the large tracts of land metal piece that supports and ground connection effect, the metal frame includes metal frame I (111), metal frame II (112), metal frame III (113), metal frame IV (114), be provided with first double-sided recess area (21) in the metal frame I (111), there is the recess in first double-sided recess area (21) tow sides all, and the centre is the metal and cuts off, first recess area (21) are used for setting up millimeter wave antenna array (20), millimeter wave antenna array (20) comprise two above antenna unit to arrange according to the array form.
2. An electronic device incorporating a millimeter wave array antenna according to claim 1, wherein: the antenna units of the millimeter wave antenna array (20) comprise slot antenna units and coupling feed units which correspond to each other, the slot antenna units are arranged on the metal partition in the first groove area (21), and the coupling feed units are arranged in the grooves on the inner side of the first groove area (21).
3. An electronic device incorporating a millimeter wave array antenna according to claim 2, wherein: the slot antenna units are arranged in an array form and comprise a first slot antenna unit (220), a second slot antenna unit (221), a third slot antenna unit (222) and a fourth slot antenna unit (223), and a distance is preset between the slot antenna units and the four sides of the groove.
4. An electronic device incorporating a millimeter wave array antenna according to claim 2, wherein: the coupling feed unit comprises a first coupling feed unit (230), a second coupling feed unit (231), a third coupling feed unit (232) and a fourth coupling feed unit (233), and is in one-to-one correspondence with the first slot antenna unit (220), the second slot antenna unit (221), the third slot antenna unit (222) and the fourth slot antenna unit (223), and the coupling feed unit and the slot antenna units are isolated and supported through a non-conductive medium.
5. An electronic device incorporating a millimeter wave array antenna according to claim 2, wherein: the shapes of the slot antenna unit and the coupling feed unit are polygonal, circular or annular.
6. An electronic device incorporating a millimeter wave array antenna according to claim 1, wherein: the antenna is characterized in that a first millimeter wave chip module (240) is further arranged in the groove on the inner side of the first double-sided groove area (21), the first millimeter wave chip module (240) is connected with the main Printed Circuit Board (PCB) (30) through a flexible circuit board, and the coupling feed units are arranged on the first millimeter wave chip module (240) and face the slot antenna unit.
7. An electronic device incorporating a millimeter wave array antenna according to claim 6, wherein:
the first millimeter wave chip module (240) comprises a wireless transceiver, a power management Integrated Circuit (IC), a radio frequency front end component and a millimeter wave communication component.
8. An electronic device incorporating a millimeter wave array antenna according to claim 1, wherein: the first double-sided groove region (21) faces one side of the appearance surface of the electronic device (10), and is further provided with a first parasitic antenna unit (210), a second parasitic antenna unit (211), a third parasitic antenna unit (212) and a fourth parasitic antenna unit (213), and the first parasitic antenna unit, the second parasitic antenna unit (211), the third parasitic antenna unit (212) and the fourth parasitic antenna unit are in one-to-one correspondence with the first slot antenna unit (220), the second slot antenna unit (221), the third slot antenna unit (222) and the fourth slot antenna unit (223), respectively.
9. An electronic device incorporating a millimeter wave array antenna according to claim 1, wherein: the first metal middle frame (11) further comprises a first clearance area (115) and a second clearance area (116).
10. An electronic device incorporating a millimeter wave array antenna according to any one of claims 1 to 9, wherein: the metal edge of the appearance surface of the electronic equipment is also used for part or all of radiators of a cellular antenna, a Bluetooth antenna, a GPS antenna, an NFC antenna and a WIFI antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911346054.2A CN110931944A (en) | 2019-12-24 | 2019-12-24 | Electronic equipment integrated with millimeter wave array antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911346054.2A CN110931944A (en) | 2019-12-24 | 2019-12-24 | Electronic equipment integrated with millimeter wave array antenna |
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| CN110931944A true CN110931944A (en) | 2020-03-27 |
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| CN201911346054.2A Pending CN110931944A (en) | 2019-12-24 | 2019-12-24 | Electronic equipment integrated with millimeter wave array antenna |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463549A (en) * | 2020-04-10 | 2020-07-28 | 维沃移动通信有限公司 | Electronic equipment |
| CN111478049A (en) * | 2020-04-10 | 2020-07-31 | 维沃移动通信有限公司 | Electronic equipment |
| CN112003011A (en) * | 2020-09-04 | 2020-11-27 | 京东方科技集团股份有限公司 | Antenna, display panel, manufacturing method and display device |
| CN112421209A (en) * | 2020-12-11 | 2021-02-26 | 维沃移动通信有限公司 | Electronic device |
| CN112599960A (en) * | 2020-11-30 | 2021-04-02 | 维沃移动通信有限公司 | Electronic device |
| CN112701467A (en) * | 2020-11-30 | 2021-04-23 | 维沃移动通信有限公司 | Electronic equipment |
| CN112864570A (en) * | 2020-12-31 | 2021-05-28 | 维沃移动通信有限公司 | Antenna structure and foldable electronic device |
| CN112993525A (en) * | 2021-02-03 | 2021-06-18 | 维沃移动通信有限公司 | Display device and electronic apparatus |
| CN112993567A (en) * | 2021-02-20 | 2021-06-18 | 南京锐码毫米波太赫兹技术研究院有限公司 | Millimeter wave antenna integrated on terminal metal frame |
| CN113224508A (en) * | 2021-04-08 | 2021-08-06 | 荣耀终端有限公司 | Antenna device, electronic apparatus, and electronic apparatus module |
| WO2022068905A1 (en) * | 2020-09-30 | 2022-04-07 | 维沃移动通信有限公司 | Electronic device |
| CN114530694A (en) * | 2022-04-24 | 2022-05-24 | 云谷（固安）科技有限公司 | Wireless communication structure, display panel and wireless communication device |
| WO2023087391A1 (en) * | 2021-11-16 | 2023-05-25 | 深圳市睿德通讯科技有限公司 | Antenna device and electronic device |
| WO2023241399A1 (en) * | 2022-06-13 | 2023-12-21 | 华为技术有限公司 | Antenna apparatus and mobile terminal |
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2019
- 2019-12-24 CN CN201911346054.2A patent/CN110931944A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463549A (en) * | 2020-04-10 | 2020-07-28 | 维沃移动通信有限公司 | Electronic equipment |
| CN111478049A (en) * | 2020-04-10 | 2020-07-31 | 维沃移动通信有限公司 | Electronic equipment |
| CN112003011A (en) * | 2020-09-04 | 2020-11-27 | 京东方科技集团股份有限公司 | Antenna, display panel, manufacturing method and display device |
| WO2022068905A1 (en) * | 2020-09-30 | 2022-04-07 | 维沃移动通信有限公司 | Electronic device |
| CN112701467A (en) * | 2020-11-30 | 2021-04-23 | 维沃移动通信有限公司 | Electronic equipment |
| CN112599960B (en) * | 2020-11-30 | 2023-12-08 | 维沃移动通信有限公司 | Electronic equipment |
| CN112599960A (en) * | 2020-11-30 | 2021-04-02 | 维沃移动通信有限公司 | Electronic device |
| CN112701467B (en) * | 2020-11-30 | 2024-03-22 | 维沃移动通信有限公司 | Electronic equipment |
| CN112421209A (en) * | 2020-12-11 | 2021-02-26 | 维沃移动通信有限公司 | Electronic device |
| CN112421209B (en) * | 2020-12-11 | 2023-12-12 | 维沃移动通信有限公司 | Electronic equipment |
| CN112864570A (en) * | 2020-12-31 | 2021-05-28 | 维沃移动通信有限公司 | Antenna structure and foldable electronic device |
| CN112864570B (en) * | 2020-12-31 | 2023-08-22 | 维沃移动通信有限公司 | Antenna structure and foldable electronic device |
| CN112993525A (en) * | 2021-02-03 | 2021-06-18 | 维沃移动通信有限公司 | Display device and electronic apparatus |
| CN112993525B (en) * | 2021-02-03 | 2024-03-19 | 维沃移动通信有限公司 | Display device and electronic apparatus |
| CN112993567A (en) * | 2021-02-20 | 2021-06-18 | 南京锐码毫米波太赫兹技术研究院有限公司 | Millimeter wave antenna integrated on terminal metal frame |
| CN112993567B (en) * | 2021-02-20 | 2022-08-05 | 南京锐码毫米波太赫兹技术研究院有限公司 | Millimeter wave antenna integrated on terminal metal frame |
| CN113224508A (en) * | 2021-04-08 | 2021-08-06 | 荣耀终端有限公司 | Antenna device, electronic apparatus, and electronic apparatus module |
| WO2023087391A1 (en) * | 2021-11-16 | 2023-05-25 | 深圳市睿德通讯科技有限公司 | Antenna device and electronic device |
| US11631930B2 (en) | 2022-04-24 | 2023-04-18 | Yungu (Gu'an) Technology Co., Ltd. | Wireless communication structure, display panel and wireless communication apparatus |
| CN114530694A (en) * | 2022-04-24 | 2022-05-24 | 云谷（固安）科技有限公司 | Wireless communication structure, display panel and wireless communication device |
| WO2023241399A1 (en) * | 2022-06-13 | 2023-12-21 | 华为技术有限公司 | Antenna apparatus and mobile terminal |
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Effective date of registration: 20210918 Address after: 314400 Building 1 (East), No.306 Gushui Road, Haichang street, Haining City, Jiaxing City, Zhejiang Province Applicant after: TIANTONG RUIHONG TECHNOLOGY Co.,Ltd. Address before: 314400 no.23-1, Shuangxue Road, Haining Economic Development Zone, Haining City, Jiaxing City, Zhejiang Province Applicant before: Tiantong Kaimei Microelectronics Co.,Ltd. |
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