Shandong Hongrui Petrochemical Co., Ltd is a Sino-Hongkong Joint-venture enterprise, founded in 2006, is one of the main manufacturers of polyisobutylene with the brand of HRD. Hongrui has powerful research strength with many senior engineers and management talents, broadly cooperates with many domestic universities and research institutes, and masters in the international leading technology of polyisobutylene. Hongrui has one of the largest base of R&D and production of low and medium ...