hard foam catalyst smp/sponge catalyst smp overview: name: polyurethane catalyst smp alias: polyurethane catalyst smp, catalyst smp, amine catalyst smp, delay catalyst smp, hard foam catalyst smp, sponge catalyst smp, sponge foam catalyst smp, low density sponge catalyst smp catalyst smp is a delayed catalyst for low density sponge or molding, it can increase foam...