Covestro Pergut Chlorinated Rubber B10, B20, B5, S10, S20, S40, S90, S130, S170 author: Post: 09/05/2023 52read Comments Off This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.allhdi.com/archives/1371 tag:B20 B5 Covestro Pergut Chlorinated Rubber B10 S10 S130 S170 S20 S40 S90