Dalian Polymer New Material Co., LTD. is a high-tech enterprise that specializes in researching, producing and purchasing high-performance engineering plastics. The products invented by professor Jian are PPEK, PPES, PPESK, which had already reached to the international advanced level. Their high-performance properties, such as thermal stability, excellent mechanical properties, radiation stability and low flammability are better than domestic & foreign similar materials. These new materials can be used as materials for the advanced composite, the separation membranes and the heat-resistance insulation lacquers. And can be used in the fields of spaceflight, aviation, electron, electric, precision machine, petroleum and chemicals.