COTECH SOLAR GROUP LIMITED. is located in Shanghai, China, invested by the individual proprietorship business enterprise of the COTECH SOLAR (HK) GROUPLIMITED.Cotech Solar is one of the few large-scale solar companies in China챦쩌� designs, manufactures and sells solar modules and designs, assembles, sells and installs solar systems that are connected to electricity transmission grids or those that operate on a stand-alone basis.