CHANGZHOU LONGQUAN SOLAR ENERGY MANUFACTURE .Is specialized is engaged in the solar energy water heater development, production, sales and large hot water engineering installation as one of the high-tech enterprises, China's solar energy industry one of the founder, and grow into one of the three largest solar production bases in domestic and Chinese solar large export enterprise. At the same time, LONGQUAN is the export-oriented valve leading production enterprises in China. the annual ...   |