... quality 2.best service 3.good price Nucleating Agent (NP-508)Chemical Name:Sodium2,2'-Methylene bis(4,6-di-tert ... resin.The Recommended Content: 0.05-0.20%.Applications: NP-508 is a suitable nucleating agent for PP, PE, PET and ... .8129.6120.1128.3129.6 High Performance Nucleating Agent (NP-508)