Shanghai Hi-Show Photovoltaic Science &Technology Co. Ltd (HSPV) , the specialist in manufacture PV product tester, started researching sun simulator technology from 1997.Dr. Xu lin, in charge of R&D, is the earliest expert in China to research and develop sun simulator, has 8 invitation patents. HSPV is trying his best to develop many kinds of instruments for testing the solar cell device and material. HSPV has clients all over the world, including USA, Italy, Spain, Russia, Belgium, India, Taiwan. HSPV has won high reputation for the high performance of products. Now HSPV is serving PV enterprise home and abroad. HSPV is cooperating with R & D institutes (CASC ), world famous PV cell/module manufactures(Yingli Solar, Jinglong Industry; Miasole and Isofoton) and National PV Product Inspection Center, and ensuring giving the most qualified PV products to customers.</p>