Blend Polyols, PU Catalyst, Polyurethane Waterproof Material manufacturer / supplier in China, offering Pentamethyldiethylenetriamine PC5 Polyurethane Catalyst PC-5 in Various Specifications, Delay Catalyst Tmr-2 CAS 62314-25-4 for Rigid Foam, Tmr-2 Tertiary Amine Used in Rigid Foam Applications Where Improved Flowability and so on.