... .high quality 2.best service 3.good price Nucleating Agent (NP-508)Chemical Name:Sodium2,2'-Methylene bis(4,6-di ... matrix resin.The Recommended Content: 0.05-0.20%.Applications: NP-508 is a suitable nucleating agent for PP, PE, PET ... .6127.8129.6120.1128.3129.6 High Performance Nucleating Agent (NP-508)