Tongwei Co.,Ltd engages in the production and distribution of feed products in China and internationally. The company offers fish feed, pig feed, poultry feed and freshwater and marine aquaculture feed; aquatic products; breeding and seedling cultivation; production, wholesale and retail of veterinary drugs, feed pharmaceutical additives; slaughter and processing of fish, pig, duck food and sales of fresh fish. It also produces and sells polysilicon and monocrystalline silicon, polyvinyl chloride and its series products, and caustic soda and ancillary products. In addition, the company operates in monocrystalline and polycrystalline silicon wafers, solar cells, solar cell modules, solar heat pipes, solar water heaters, hot water systems and solar thermal application products; and sale of photovoltaic equipment and technical consultation, as well as provides solar power generation and related services. Tongwei Co., Ltd was founded in 1995 and is headquartered in Chengdu, China. Tongwei Co.,Ltd is a subsidiary of Tongwei Group Co., Ltd.