TW Solar has been continuously engaged in the research, development, manufacturing and promotion of core products of solar power generation. There are 4 bases including Hefei, Shuangliu, Meishan and Jintang (Tonghe project). TW Solar has more than 13,000 employees. Its capacity exceeded 54GW. With the completion and commissioning of Jintang Phase II of 8GW and Meishan Phase III of 8.5GW, it is expected that the company's production capacity will exceed 70GW by the end of 2022, of which large size cell production capacity will account for more than 90%. From 2024 to 2026, TW Solar will have a production capacity of 130-150GW.

1. Hefei Base

Hefei base was put into operation on November 18th , 2013 in the High-tech Zone, Hefei City, Anhui Province. The first phase of the Anhui project was completed on January 8th, 2019. The project fully adopts the PERC technology, and focuses on the unmanned intelligent manufacturing route of high-efficiency monocrystalline cell. It builds intelligent factories and digital workshops to further improve the company's profitability and enhance Market competitiveness and consolidate the company's leading position in the high-efficiency crystalline silicon cell industry.

Phase II of Hefei base finished construction on January 8, 2019. This project fully adopts Rear Passivation technology and features in high efficiency mono-crystalline silicon cell unmanned manufacturing, smart factory and digitalized workshop, which will further increase efficiency and boost profitability and consolidate the leading place in high efficiency crystalline silicon solar cell production.

2. Shuangliu Base

Shuangliu Base is located in Shuangliu District, Chengdu City, Sichuan Province. The first phase was completed and put into operation on June 30th, 2016. The construction period took only 7 months. It was praised by mainstream media for creating "Tongwei Speed", "Shuangliu Speed" and "Chengdu Speed",becoming a model demonstration project that is fast in construction, production, and gaining profit.

The second phase was completed and put into operation on September 20th, 2017. With the production capacity and engineering volume doubling, the construction complete period only took 7 months, which refreshed the construction speed. The second-phase production line has been upgraded to fully automatic unmanned manufacturing, becoming a model project of "intelligent manufacturing" in Chengdu, taking the lead in realizing digital workshops and intelligent factories, realizing clean energy "Made in Chengdu", and actively building a national intelligent manufacturing demonstration base. The third phase was completed and put into operation on November 18th, 2018, and the actual construction period was only 6 and a half months. The project fully adopts the PERC technology, focuses on the unmanned intelligent manufacturing route of high-efficiency monocrystalline cells, builds intelligent factories and digital workshops, and has become a high-efficiency photovoltaic industry leader in process technology, production equipment, automation and intelligence in the current global photovoltaic industry.

The fourth phase was completed and put into operation on November 18th, 2019, with a construction period of only 7 months. The project was started in the same year, constructed in the same year, and put into production in the same year. It has once again refreshed the global record for the production capacity of a single workshop. It is a crystalline silicon cell workshop with leading technology, production lines, automation and intelligence. It is also an intelligent factory in the global photovoltaic industry and a sample project for a digital workshop. The project has a total of 16 fully enclosed automatic production lines for intelligent manufacturing of high-efficiency crystalline silicon cells, all of which produce large-sized cells with lower production costs and higher wattage per cell. They are all composed of automatic grasping robotic arms and intelligent transportation robots, adding new momentum to TW Solar's intelligent, digital, modern and refined management.

3. Meishan Base

TW Solar Meishan Base is located in Ganmei Industrial Park, Meishan City, Sichuan Province. On January 25th, 2019, the Meishan Government, the Ganzi Government and TW Group held the signing ceremony of the TW High-tech Green Industrial Park Project and the 10GW High-efficiency Crystalline Silicon Cell Project. On March 27th, 2019, the construction of the crystalline silicon cell project started On April 21st, 2020, the first phase of the project was completed and put into operation, and construction of the second phase of the project started simultaneously. The Meishan project only took 36 days from the beginning of the contact between the two parties to the finalization of the investment, only 50 days for the official signing, and only 110 days for the official start of construction, creating a new "Tongwei Speed" and "Ganmei Speed" for project investment.

On February 28th, 2021, the first cell of the Phase II project of the Meishan Base officially rolled off the production line. The Phase II project covers an area of 160,000 square meters, with a workshop area of 80,000 square meters. There are 16 fully automatic closed high-efficiency intelligent production lines. With the continuous advancement of product technology and manufacturing process, the crystalline silicon cell production line will be more automated, intelligent and digital in the second phase, which will provide a strong boost to the photovoltaic industry and drive the rapid transformation of human energy use. With its completion and commissioning, Tongwei Solar's Meishan base has a production capacity of 15GW, further consolidating its status as a leading solar cell company in Tongwei.

4. Jintang Base

The Jintang base is located in Huaikou Town, Jintang County, Chengdu. The 30GW high-efficiency crystalline silicon cell and supporting projects will be implemented in phases, and will be gradually completed and put into production in the next 3-5 years. More than 5,000 people have been employed, and the annual tax revenue is about 2 billion yuan. The first phase of the 6.6GW project started construction on March 25, 2020, and the first cell was rolled out in May 2021.

Tongwei will use the Jintang project as a pilot project to actively carry out the application of 5G in the field of industrial Internet, build the Jintang project into a model of 5G+ advanced manufacturing, and rely on the Tongwei industrial manufacturing scene to promote the construction of a photovoltaic green smart town. The Jintang project will make full use of Chengdu as the bridgehead of the Chengdu-Chongqing economic circle, the locational logistics advantages of the China-Europe freight train, and the advantages of hydropower, etc., to build a major production base in Chengdu that radiates the western region of China and the export of photovoltaic products to the European market. After full production, it will provide important industrial support for the high-quality development of the Chengdu-Chongqing economic circle.

5. Tonghe project

The Tonghe project is jointly invested and constructed by Tongwei Solar and Trina Solar. The total area of the project is around 920 mu, with an investment of 6 billion yuan. It will build an annual output of 15GW high-efficiency crystalline silicon cells and a 15GW chip supporting production base. Tonghe New Energy will give full play to the leading advantages of Tongwei Solar and Trina Solar in all aspects of the industrial chain, further strengthen the strategic partnership, and create a new industry development pattern featuring professional division of labor, dislocation development, and cooperation and mutual benefit.

Tonghe New Energy started construction in early April 2021. The first silicon wafer of the slicing project was rolled off the production line on October 28th, 2021, and the first cell of the solar cell project was rolled off the production line on November 10, 2021. After Tonghe New Energy is fully put into production, it is estimated that the annual sales revenue will be 12 billion yuan, and the annual tax payment will be 300 million yuan. Tonghe New Energy is the joint and integrated layout of TW Solar and Trina Solar, and it is also an important means to realize the supply of raw materials and the stability of the industrial chain, reduce costs, increase efficiency, and expand global market share.

6. The strength of the company

In addition to the optimization and improvement of mainstream PERC cell technology, TW Solar focuses on technical research on the goal of improving efficiency and reducing cost of next-generation cell technology under the conditions of mass production. On the basis of the 400MW HJT test line put into operation in 2019, the company has put into operation a 1GW HJT pilot line in 2021. At present, the R&D and mass production efficiency of HJT has been greatly improved, and the consumption indicators of main auxiliary materials and consumables have further decreased. silver paste replacement R&D has made staged progress; on the other hand, the company has simultaneously carried out the mass production R&D of TOPCon technology, and took the lead in launching the 210-size TOPCon mass production pilot test. At present, the 1GW TOPCon project has been successfully put into production, and the product mass production has been converted with Industry-leading efficiency. TW Solar has formed a number of technological achievements with independent intellectual property rights in the core technical fields of atomic layer deposition back passivation, selective emitter process, bifacial cells, multi-busbars, TOPCon cells, and HJT cells. On the one hand, the company strives for perfection in PERC technology. The cell conversion efficiency has been steadily improved and the unit consumption level of main pastes has been further optimized. The cost of leek silicon has decreased by 20% year-on-year. On the other hand, in the research and development of new cell technology, the company’s TOPCon cell adopts the self-developed and industry-leading 210 PECVD polysilicon deposition technology route, with average conversion efficiency exceeding 24.7%, and the module power reaches 690W (210 size 66-chip version). It has effectively Solved many technical difficulties under the conditions of TOPCon mass production. In order to meet the needs of downstream customers for a new generation of cell products, the company plans to build a new 8.5GW TOPCon cell production line, which is expected to be completed and put into operation by the end of 2022. At the same time, the highest R&D efficiency of the company's HJT cell has reached 25.67% (ISFH certification), and the metallization technology to replace silver has also achieved important milestones. The company will continue to focus on HIT cell efficiency improvement and cost reduction. In addition, the company has also carried out research and development of cutting-edge technologies such as full-back contact cells and perovskite/silicon tandem cells.

The high-efficiency cells and their packaging components independently developed by TW Solar have been tested and certified by the National Photovoltaic Product Quality Supervision and Inspection Center, breaking the world record twice. Up to now, TW Solar has accumulated nearly 500 valid authorized patents.

In the past 8 years, TW Solar has won the national "green factory", the national "green supply chain management demonstration enterprise", the Ministry of Industry and Information Technology's 2018 pilot enterprise for the implementation of the digitalization and informatization integration management, "National Enterprise Technology Center" and "National Knowledge Center". Property Rights System Standardization", "National Five-star Site", "National Advanced Enterprise Implementing Excellent Performance Model", "National High-tech Enterprise", "Anhui Enterprise Technology Center", "Anhui Provincial Quality Award", "Sichuan Five-star Site" and more than 400 provincial and municipal awards.

On the client side, TW Solar strengthens strategic cooperation with major customers and suppliers. With good industrial chain cooperation and excellent production, operation management capabilities, company's core capabilities such as capacity utilization, cell conversion efficiency, yield, non-silicon cost, etc,the indicators continue to maintain the leading edge in the industry, and the production and operation are arranged in combination with the production line structure, and the products are directly sold to downstream component companies. With leading technology, quality and cost advantages, the company's main customers cover the world's top ten photovoltaic module companies, and the production capacity utilization rate has maintained an industry-leading level for a long time. It has been unanimously praised by the world's top five module manufacturers, and won the "Excellent Quality Supplier" of Jinko Solar Co., Ltd., the "Best Quality Supplier" of GCL Integration Technology Co., Ltd., and the "Excellent Supplier" of Canadian Solar Power Co., Ltd. , "Excellent Supplier" of Trina Solar Energy Co., Ltd., "Outstanding Supplier" of Zhongnan Photoelectric Co., Ltd., "Best Quality Supplier" of Jinzhou Sunshine Energy Co., Ltd., etc.

TW Solar, as the world's leading professional solar cell manufacturer and supplier, has been the first of the world in terms of cell shipments for five years since 2017 (statistics by PV Infolink, an authoritative analysis agency for the photovoltaic industry), becoming the first in the industry whose shipments exceeding 100GW enterprise.