Bayer MaterialScience AG is one of the world's largest producers of polymers and high-performance plastics. Its innovative developments in coatings, adhesives, insulating materials and sealants, polycarbonates and polyurethanes enhance the quality of our lives, particularly in the automotive and construction, electrical and electronics, household, sports and leisure sectors. Bayer MaterialScience AG is currently making major investments in the boom region of Asia. New production facilities for a wide range of different products are under construction at the Bayer Integrated Site at Shanghai Chemical Industrial Park in Shanghai with an investment volume of 1.8 billion US dollars. Bayer is planning to start the construction for its 350,000 tons MDI complex soon.

Wuxi Changrun provide more than 9,300 pieces of 1.4571, C22.8, A105 and 1.1541 flanges and forgings for Bayer MaterialScience AG. The products are used in the DNT, TDAI Project.