Among them, the solar energy, EPC project owner units is given priority to with soe/state, China solar power network, this also reflected from the side, solar power grid, silicon plastic pipe in project bidding and parity, solar photovoltaic (pv) survey of state-owned enterprises has become the absolute main force. Upside down to two pipe system in particular, China solar energy network, CGNPC in development of 410 mw, 603 mw, guangzhou energy saving 220 mw, 345 mw, jin can group solar energy, solar energy photovoltaic stents in the people vote for 200 mw, solar silicon wafer manufactures custom fixed hubei energy group, 190 mw, the back of the cabinet upside down for huaneng 180 mw double pipe system this paper statistics September to today issued a total of 2. 85 gw pv power plant EPC and 1. 9 gw component bid opening information. Solar photovoltaic stents