Zhaoyuan Dongwei Chemical Co., Ltd. is loated in Canzhuang Town Industrial Park in Zhaoyuan City of Shandong Province. Close to the National Highway 206 and Dalailong Railway to the north, Wei-Wu Expressway to the east, and 30km from Longkou Port, the company enjoys superior location and convenient transportation.With an occupied floor space of more than 20,000 sq. meters, we mainly manufacture phosphorous acid ester thermal stabilizers (TPP, TNPP, DPDP, PDDP, PDOP), complex thermal stabilizer ...