国产精品有码无码AV在线播放,国产在线精品福利91香蕉,亚洲一区二区三区无码国产,爱爱视频一区二区三区

The company has a R&D center specializing in the research and development of chlorinated polymers and related products. At present, the R&D center has more than 20 technical personnel and complete R&D and testing equipment. The R&D projects involve new product development, raw material development, production process optimization, product improvement, downstream application development, and user service. Through scientific and technological research, commercialization, re-innovation, development strategy research and other scientific and technological activities, the R&D center has established close technological ties with the market and continually develop new products with market prospects and competitiveness.