With the profound accumulation of the expert team and years of continuous R&D and innovation, Yourun catalyst has developed from a single series of CUCAT that initially replaced organic mercury to nearly 100 products of six series of CUCAT / AUCAT / WCAT / BCAT / ZCAT / FOCAT catalysts that now completely replace mercury, lead and tin catalysts. The application of Yourun polyurethane or PU catalyst includes all the products related to polyurethane resin and not limited to coating field, adhesive field, sealant field, elastomer field, which are also called CASE field in short.