Shanghai Plastics Research Institute Co., Ltd. was established on July 1, 1963, and is one of the earliest research institutions in China engaged in the development of molding, processing, and application technologies for fluorine-containing plastics. Belonging to Shanghai Huayi (Group) Co., Ltd. Enterprise nature: State owned enterprise. At present, two sets of material testing machines (LR50K Plus, LF Plus) from LLOYD company of Ametek Group in the United States are purchased from our company for testing the tensile and bending properties of rubber materials at room temperature and high temperature.