Jiayu is a large professional joint-stock company integrating R&D, design, manufacture and construction of energy-saving door, window and curtain wall, and it has Hongkong Jianyin International Investment Co. Ltd. attached to China Construction Bank as its second largest stockholder. JIAYU Group owns 8 branches all over the country, and has established manufacture base for energy-saving door, window and curtain wall in Chongqing municipality, which is the largest one in southwestern area. Meanwhile, it has also established oversea companies and offices in USA, Britain, Middle East, India, Australia and so on.