Sichuan Yongxiang Co., Ltd. was established in November 2002. After 20 years of development, the company has formed new energy from "brine, caustic soda, polyvinyl chloride to calcium carbide slag cement" and from "hydrogen chloride, trichlorosilicon to polycrystalline silicon" The circular economy industrial chain is a complete combination of new energy and chemical industry.

Yongxiang Co., Ltd., a subsidiary of Tongwei, owns four major production bases: Leshan, Sichuan, Baotou, Inner Mongolia, Baoshan, Yunnan, and Guangyuan, Sichuan. The company's products cover electronic and solar energy levels, realizing the "China Intelligent Manufacturing" of high-purity crystalline silicon.

Leshan is the origin of Tongwei high-purity crystalline silicon. Starting from a company like Yongxiang Resin, Yongxiang Co., Ltd. Sichuan Leshan Base now owns Yongxiang New Energy, Yongxiang Energy Technology, Yongxiang Photovoltaic Technology, Yongxiang Polycrystalline Silicon, Yongxiang Resin, Yongxiang Silicon Material, Yongxiang Polycrystalline Silicon (New) Eight companies, including materials) and Tongwei Green Energy, have formed a complete circular economy industrial chain that combines chemical industry and new energy.

As a major investment promotion project in Yunnan Province, the first phase of Yunnan Tongwei took 355 days from pile driving to production, breaking the industry project construction record. On May 1, 2024, the 200,000-ton high-purity crystalline silicon project in Tongwei Phase II in Yunnan achieved a one-time driving success. With the full production of the 200,000-ton project in Yunnan Tongwei Phase II, Tongwei's annual production capacity will reach 650,000 tons, further consolidating the leading position of the world's high-purity crystalline silicon.

On August 1, 2023, the Guangyuan Municipal People's Government, the Cangxi County People's Government and Tongwei Co., Ltd. signed the "Investment Agreement for 400,000 Tons of Green Base Materials (Industrial Silicon) Project". On November 28 of the same year, the 200,000-ton industrial silicon project of Tongwei Green Substrate (Guangyuan) Phase I was started. The project is planned to build a green silicon production line and supporting facilities with an annual output of 400,000 tons. At the same time, in order to meet the demand for industrial silicon production, Tongwei Silicon Resources (Guangyuan) was established.

The Baotou Base in Inner Mongolia is based on the first high-purity crystalline silicon company that Yongxiang Co., Ltd. has been deployed outside the province, and continues to develop. It now has Inner Mongolia Tongwei, Tongwei Silicon Energy (Inner Mongolia), and Tongwei Green Materials (Inner Mongolia). ) The three companies have injected great momentum into Baotou's construction of world green silicon.