CN107492581B - Back contact solar battery component and its manufacturing method - Google Patents
Back contact solar battery component and its manufacturing method Download PDFInfo
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- CN107492581B CN107492581B CN201710659938.8A CN201710659938A CN107492581B CN 107492581 B CN107492581 B CN 107492581B CN 201710659938 A CN201710659938 A CN 201710659938A CN 107492581 B CN107492581 B CN 107492581B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 239000005341 toughened glass Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022441—Electrode arrangements specially adapted for back-contact solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0516—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module specially adapted for interconnection of back-contact solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention relates to a kind of back contact solar battery component and its manufacturing methods, the front of its each solar battery sheet is Nian Jie with EVA layer, then EVA layer is inverted face-down to solar cell back, a plurality of conductive strips are fixed on insulating film layer by preset shape, each conductive strips are made to form an entirety, conductive strips are soldered to solar cell back face again, since solar battery sheet is located above conductive strips, scolding tin is heated when melting will not drop to grid line under the effect of gravity, to avoid grid line short circuit, improve the yield rate of solar cell module, and disposably all scolding tin are melted using infrared reflow weldering in welding process, do not have to weld one after another, conductive strips shifting phenomena will not occur.
Description
Technical field
The present invention relates to a kind of back contact solar battery component and its manufacturing methods.
Background technique
Currently, solar cell module is generally made of tempered glass, EVA layer, solar battery sheet and conductive strips, tempering
Glass provides protection for solar cell module, and EVA layer is used to be adhesively fixed multiple solar battery sheets, and solar battery sheet is logical
It crosses photoelectric effect and luminous energy is directly converted to electric energy, conductive strips are established electrical connection between any two solar battery sheet and closed
System.Wherein, the electricity generating principle of solar battery sheet is: solar irradiation forms new electron-hole pair in semiconductor P-N junction,
Under the action of P-N junction built in field, photohole flows to the area P, and light induced electron flows to the area N, uses the photoproduction of positive electrode gate bundle of lines at this time
Holes collection is got up, and is collected light induced electron with cathode grid line, can be powered outward.
In order to increase output power it is necessary to allow the reception sunlight of solar battery sheet energy maximum area, then there has been
Authorization Notice No. is the patent of 103066151 B of CN and entitled " a kind of production method of back contact solar cell string ", ginseng
Fig. 1 is examined, in that patent, the characteristics of back contact solar cell string is that solar battery sheet is set as to back-contact, so too
It is positive can the front of cell piece blocked without grid line, so that it may maximumlly absorb light, then by being stretched tight with straight conductive strips 5
Gauze is by multiple welding of battery film bunchiness, to realize the series connection of adjacent cell piece.But this scheme is all concentrated due to grid line
At the back side of solar battery sheet, so that back side grid line is excessively intensive, conductive strips 5 are welded on grid line by worker by its method
When, it is easy to drop to scolding tin on grid line, causes grid line short-circuit, solar battery sheet is impaired.Especially when 5 quantity one of conductive strips
When more, the risk of scolding tin drippage is higher, makes the decrease in yield of solar cell module, and due between each conductive strips 5
It is mutually discrete, it when welding conductive strips 5, need to weld one by one, welding is cumbersome, and solar cell module is caused integrally to weld
Connect difficulty.
Summary of the invention
Mesh of the invention is the yield rate for improving solar cell module.
Inventor's discovery: in traditional welding manner, since conductive strips are in the top of solar battery sheet, conductive strips
When being soldered to solar battery sheet, the heated scolding tin melted is easy to drop to grid line under the effect of gravity, and then causes grid line short
Road.Based on the discovery, inventor proposes following technical scheme:
A kind of method for manufacturing back contact solar battery component is provided, each solar battery sheet by default row
Column mode is placed on EVA layer, and the front of each solar battery sheet is Nian Jie with EVA layer, and then EVA layer is inverted to solar energy
The cell piece back side is soldered to solar cell back face downward, conductive strips, so as to be formed between every two solar battery sheet
Series/parallel relationship.By the way that the front of each solar battery sheet is bonded to EVA layer, so that each solar battery sheet shape
It at an entirety, is inverted after can very easily picking up EVA layer, keeps solar cell back face-down, at this time again leading
Electric tape welding is connected to solar cell back face, and since solar battery sheet is located above conductive strips, scolding tin is heated will not when melting
Grid line is dropped under the effect of gravity, to avoid grid line short circuit, improves the yield rate of solar cell module.
Due to more than conductive strips and discrete, when welding, welding conductive strips one by one can be cumbersome, and each conductive strips are put
It postpones a block welding and is then easy to happen conductive strips shifting phenomena, especially when being inverted welding, welding is even more difficulty.Based on this,
A kind of back contact solar battery component, including a plurality of conductive strips and multiple back contact solar battery pieces are provided, it is conductive
Tape welding is connected to solar cell back face, so as to form series/parallel relationship between every two solar battery sheet, further include
Insulating film layer, each conductive strips are fixed on insulating film layer by preset shape.Before welding, first a plurality of conductive strips by pre-
If shape is fixed on insulating film layer, so that each conductive strips is formed an entirety, facilitate taking and placing；When welding, it is only necessary to set scolding tin
In on conductive strips, then the back side of inverted solar battery sheet is pressed on conductive strips, then is welded with infrared reflow and disposably will
All scolding tin melt, that is, do not have to weld one after another, conductive strips shifting phenomena will not occur.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing back contact solar cell string.
Fig. 2 is the structural schematic diagram of back contact solar battery component in the present invention.
Fig. 3 is the schematic diagram that fixing step is performed in embodiment.
Fig. 4 is schematic diagram when upper pressed sheet and lower pressed sheet do not close up in embodiment.
Fig. 5 is schematic diagram when upper pressed sheet and lower pressed sheet close up in embodiment.
Specific embodiment
The present invention is described in detail below in conjunction with embodiment and attached drawing, it should be pointed out that described reality
It applies example and is intended merely to facilitate the understanding of the present invention, and do not play any restriction effect to it.
With reference to Fig. 2, the top layer of back contact solar battery component is made of the tempered glass 1 with protective effect, steel
Change 1 bottom surface of glass it is Nian Jie with adhesive transparent EVA layer 2, the bottom surface of transparent EVA layer 2 respectively with each solar battery sheet 3
Front is bonded, so that each solar battery sheet 3 forms an entirety.
The positive grid line at 3 back side of solar battery sheet is raised to form positive pin outwardly, 3 back side of solar battery sheet
For protrusion to form negative pin, conductive strips 5 are soldered to the positive pin or cathode at 3 back side of solar battery sheet to cathode grid line outwardly
Pin, so that forming serial or parallel connection relationship between every two solar battery sheet 3.Specifically, conductive strips 5 are welded on just
On the port of pole pin or negative pin, so that there are gaps 4 between 3 back side of solar battery sheet and insulating film layer 6, welding
When, gap 4 not only provided placement space for scolding tin but also provided air-supply path for infrared reflow weldering, while facilitating infrared reflow to weld
So that the scolding tin melted will not touch the grid line at 3 back side of solar battery sheet.
The bottom surface of each conductive strips 5 is bonded with insulating film layer 6, and insulating film layer 6 is made of adhesive insulating materials, the band
The insulating materials of viscosity can be PVB or POE, be also possible to transparent inorganic film, conductive strips 5 and insulating film layer 6 without passing through glue
Bonding can be realized, to simplify production process, each conductive strips 5 are all bonded to insulating film layer 6, thus each 5 shape of conductive strips
It is continuously whole at physics, facilitate taking and placing.It is formed due to the presence of insulating film layer 6, between insulating film layer 6 and tempered glass 1 double
Face clamping action can greatly enhance the bending resistance and rigidity of solar cell module, obtain solar cell module more preferably
Ground protection.
In addition, each conductive strips 5 are adhesively secured to insulating film layer 6 after forming preset shape again, which can be by setting
Meter personnel set as the case may be, and the benefit for forming preset shape is: since each conductive strips 5 have put good position,
It only needs to guarantee that each conductive strips 5 are soldered to each 3 back side of solar battery sheet in alignment, that is, is convenient to setting by designer
Meter each solar battery sheet 3 is connected, wherein the connection type of each solar battery sheet 3 can be all series connection with
The output voltage for enhancing solar cell module is also possible to all output electric currents in parallel to enhance solar cell module,
It can also be sections in series part in parallel, to both enhance output voltage or enhancing output electric current.It is worth noting that by default
Why simple the mode that shape is adhesively secured to after insulating film layer 6 row welding again is, major embodiment both ways: first is that worker welds
Connect it is simple, when welding, it is only necessary to be aligned conductive strips 5 with solar battery sheet 3, then be blown into hot wind into gap 4 to make on conductive strips 5
Whole scolding tin disposably all melt；Second is that intuitive and can be modified due to doing drawing connection design on computers
Property be significantly larger than object operation, therefore the implementation that each solar battery sheet 3 is attached by preset design also becomes letter
It is single.
With reference to Fig. 3, when manufacturing back contact solar battery component, tempered glass 1 is first placed on desktop with manipulator
On, realize automatic glass feeding, then manipulator cut out automatically with the equal-sized EVA of tempered glass 1, and by EVA laying
On glass.Then the fixing step that each solar battery sheet 3 is fixed is executed, specific as follows: manipulator is each sun
Energy cell piece 3 is placed on EVA layer 2 by default arrangement mode, so that the front of each solar battery sheet 3 and EVA layer 2 are viscous
It connects, wherein the spacing between solar battery sheet 3 and solar battery sheet 3 is 1-3mm.So far, due to each solar battery
Piece 3 is bonded to EVA layer 2 all to form an entirety, therefore taking and placing can be facilitated to be inverted.
With reference to Fig. 4, after solar battery sheet 3 is bonded to EVA layer 2, manipulator carries out the procedure of processing of conductive strips 5, tool
Body is as follows: the moderate conductive plate 52 of thickness chosen, conductive plate 52 is paved to 53 top of lower pressed sheet for being placed on press machine, and
It uses briquetting to push down with fixation on four sides of conductive plate 52 and four corners, prevents from generating offset in punching course.It then will be with viscous
Property insulating film layer 6 be placed on 53 lower section of lower pressed sheet, and then start press machine, upper pressed sheet 51 and lower pressed sheet 53 close
Hold together to the state of Fig. 5.Since lower pressed sheet 53 is equipped with shape as the hollow out striped 531 of above-mentioned preset shape, and upper pressed sheet
The protrusion 511(punching press principle of corresponding hollow out striped 531 is then equipped on 51), when upper pressed sheet 51 and lower pressed sheet 53 close up,
Upper pressed sheet 51 can be by 52 punching press of conductive plate of the hollow part of lower pressed sheet 53 to band adhesive insulation layer, to disposably be formed
A plurality of conductive strips 5, and each conductive strips 5 are well placed by preset shape, at this time since insulating film layer 6 is with toughness, are put
Good conductive strips 5 are adhesively fixed naturally with insulating film layer 6, so that making each conductive strips 5 form an entirety, so as to mechanical
Hand or the disposable taking and placing of sucker.It is worth noting that, procedure of processing can execute before fixing step, can also be walked with fixed
It is rapid parallel.
Procedure of processing and fixing step all after the completion of, execute welding step, it is specific as follows: EVA layer 2 shown in Fig. 3 is taken
It is inverted after rising, makes 3 back side of solar battery sheet downward, then picked up and be equipped with the conductive strips 5 of scolding tin and be placed on solar battery sheet 3
Lower section, conductive strips 5 are pressed into contact with after being aligned with the grid line of solar panels, and the hot wind that infrared reflow welds then is passed through solar-electricity
Gap 4 between pond piece 3 and insulating film layer 6 is blown into, so that whole scolding tin disposably melt, due to each conductive strips 5 at this time
Put by preset shape, thus between any two solar battery sheet 3 can be connected by conductive strips 5, formed series connection or simultaneously
Connection relationship, to produce back contact solar battery component shown in Fig. 2.It will not be in gravity when melting since scolding tin is heated
Grid line is dropped under effect, to avoid grid line short circuit, improves the yield rate of solar cell module, and do not have to each
Ground welding, will not occur 5 shifting phenomena of conductive strips, weld simple to operate, weld interval shortening.
It is worth noting that welding manner is not limited to infrared reflow weldering, it is also possible to hot gas welding, high temperature conduction welding
Deng.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (8)
1. back contact solar battery component, including a plurality of conductive strips and multiple back contact solar battery pieces, conductive strips
It is soldered to solar cell back face, so as to series/parallel relationship is formed between every two solar battery sheet, it is characterized in that:
It further include insulating film layer, each conductive strips are fixed on insulating film layer by preset shape, the solar cell back face
Protrusion is outwardly to form positive pin for positive grid line, and protrusion is negative to be formed outwardly for the cathode grid line in the solar cell back face
Pole pin, conductive strips are welded on the port of positive pin or negative pin, so that solar cell back face and insulating film
There are gaps between layer.
2. back contact solar battery component according to claim 1, it is characterized in that: the insulating film layer is band viscosity
Insulating layer.
3. back contact solar battery component according to claim 2, it is characterized in that: the band adhesive insulation layer is
PVB or POE.
4. the method for manufacturing back contact solar battery component, comprising:
Fixing step is placed on each solar battery sheet on EVA layer by default arrangement mode, each solar battery sheet
Front it is Nian Jie with EVA layer；
It is characterized in that further include:
The welding step executed after fixing step, EVA layer is inverted it is face-down to solar cell back, conductive strips
It is soldered to solar cell back face, so as to form series/parallel relationship between every two solar battery sheet.
5. according to the method described in claim 4, it is characterized in that: further include the procedure of processing executed before welding step,
Including insulating film layer, a plurality of conductive strips are fixed on insulating film layer by preset shape.
6. according to the method described in claim 5, it is characterized in that: the insulating film layer is adhesive insulating layer.
7. according to the method described in claim 6, it is characterized in that: conductive plate is placed on equipped with hollow out striped in procedure of processing
Lower pressed sheet above, band adhesive insulation layer is placed below lower pressed sheet, in the hollow part of lower pressed sheet, with pressed sheet general
In conductive plate punching press to band adhesive insulation layer, so that conductive plate is naturally Nian Jie with adhesive insulation layer.
8. according to the method described in claim 7, it is characterized in that: the shape of the hollow out striped is the preset shape.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710659938.8A CN107492581B (en) | 2017-08-04 | 2017-08-04 | Back contact solar battery component and its manufacturing method |
| PCT/CN2017/000606 WO2019023820A1 (en) | 2017-08-04 | 2017-09-21 | Back-contact solar cell assembly and manufacturing method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710659938.8A CN107492581B (en) | 2017-08-04 | 2017-08-04 | Back contact solar battery component and its manufacturing method |
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| Publication Number | Publication Date |
|---|---|
| CN107492581A CN107492581A (en) | 2017-12-19 |
| CN107492581B true CN107492581B (en) | 2019-01-29 |
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| CN201710659938.8A Active CN107492581B (en) | 2017-08-04 | 2017-08-04 | Back contact solar battery component and its manufacturing method |
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| CN (1) | CN107492581B (en) |
| WO (1) | WO2019023820A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113314637A (en) * | 2021-05-28 | 2021-08-27 | 宁夏小牛自动化设备有限公司 | Preparation method of single-side welded dense-grid solar cell string |
| CN116247120A (en) * | 2021-12-08 | 2023-06-09 | 中能创光电科技(常州)有限公司 | Manufacturing method of photovoltaic cell assembly and photovoltaic cell assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7390961B2 (en) * | 2004-06-04 | 2008-06-24 | Sunpower Corporation | Interconnection of solar cells in a solar cell module |
| WO2013066815A1 (en) * | 2011-10-31 | 2013-05-10 | E. I. Du Pont De Nemours And Company | Solar cell module and process for making the same |
| CN103856163A (en) * | 2012-12-04 | 2014-06-11 | 杜邦公司 | Assembly used for back contact type photovoltaic module |
| CN103456843A (en) * | 2013-09-17 | 2013-12-18 | 连云港神舟新能源有限公司 | Method for manufacturing back contact type crystalline silicon solar cell component |
| CN103956400A (en) * | 2014-05-16 | 2014-07-30 | 普乐新能源（蚌埠）有限公司 | Core plate for back contact solar assembly and manufacturing method thereof |
| CN106856213B (en) * | 2017-02-23 | 2019-02-15 | 南京日托光伏科技股份有限公司 | A kind of conductive backings and preparation method thereof of suitable scale volume production |
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2017
- 2017-08-04 CN CN201710659938.8A patent/CN107492581B/en active Active
- 2017-09-21 WO PCT/CN2017/000606 patent/WO2019023820A1/en active Application Filing
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| WO2019023820A1 (en) | 2019-02-07 |
| CN107492581A (en) | 2017-12-19 |
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Effective date of registration: 20180518 Address after: 225500 6 Kaiyang Road, Jiangyan Economic Development Zone, Taizhou, Jiangsu Applicant after: TAIZHOU ZHONGLAI OPTOELECTRONICS TECHNOLOGY CO., LTD. Address before: 215000 22, B block, Zhi Gu building, 186 Yangzi Middle Road, Yangzhou Economic Development Zone, Jiangsu. Applicant before: Zhong Lai PV Technology (Yangzhou) Co., Ltd. |
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