Nanjing Jinling Opta Polymer Co., Ltd. (NJOP) is a joint venture run by SINOPEC and Finland Optatech Corporation, specializing in the R&D and production of thermoplastic elastomer.

Established in 2001, NJOP introduced the worldwide leading solid-state polymerization (ssp) and dynamic vulcanization technology, and developed the world's broadest and most diverse line of TPE/TPV/TPO material led by Pacrel brand. The products have been widely used in automotive industry, construction, wires & cables, electronics by customers at home and abroad.

The factory of NJOP is located in Nanjing, and the annual capacity reaches 5,000 tons.