Tongwei entered the market of photovoltaics (PV) in 2006. After more than 10 years of rapid development, Tongwei has become an integrated PV enterprise with high-purity polysilicon production in upstream, high-efficiency solar cell production and high -efficiency PV module production in midstream, as well as experience in PV power plant construction and operation in downstream. It has formed a complete PV new energy industry chain with independent intellectual property rights and leading scale, technology, cost, and quality advantages, building up the vertically integrated layout of the whole PV industry chain.