Chengde Precision Testing Machine Co., Ltd. is a technology - concentrated enterprise with research, development, manufacture and sales service. We are a well-known manufacturer of testing machines, specializing in non-metallic materials. The main products of our company include impact testers, tension testers, and universal testers, interface tension instrument, melt and flow rate instrument, melting index instrument, heat distortion testing instrument and other ten series of products. These products are widely used in the testing of plastic pipe materials, section materials, engineering...