GS Machinery Group Co., Ltd, was established in the early 1990??????, is one of the leading companies in China focused on research, development and manufacture of plastic machines and relative molds. After 20 years of development, the group now occupies a industry park with the area more than 158,000 square meters in Shanghai, and with five branches in Zhejiang and Jiangsu province. GS Group produces a wide range of plastic machines, including high precision variable pump series & energy-saving ...