Liaoning Tianhe Fine Chemicals Co., Ltd Our headquarter is located in the economic development zone around Bohai Sea, in the city of Jinzhou, a beautiful coastal city of Liaoning Province. Tianhe Chemicals has been the first-level network supplier of Sinopec and PetroChina, the science & technology project base supported by the Ministry of Science & Technology of China and has passed the quality control system ISO9002, ISO9000, ISO9001certification, environment certification ISO14001 and occupational safety certification GB/T28001-2001.