we are mainly engaged in the study of styrene thermoplastic elastomers such as sebs and seps with different microstructure and aggregate structure, and have the ability of small-scale research and pilot scale-up of anionic active polymerization and catalytic hydrogenation. according to different application fields and different performance requirements, different structures of styrene thermoplastic elastomers are customized and synthesized through the concept of molecular structure design. this technology is in the leading position in china.