As the leading GCL supplier in China and compiler member for GCL standards of China, we are now developing overseas market. Please do not hesitate to contact us for cheaper & high-quality products. ISO 9001:2000 certified; ISO 14001:2004 certified.Our product has been widely used in the major constructions nationwide, such as Olympic projects, Terminal 3 of Capital Airport, commercial terminal of Kunming Airport, Beijing Yuanmingyuan Relic Park, the Three Gorges reservoir area and new Beijing South Train Station.