Hubei Nanxing Polymer Additives Co., Ltd., is the earliest and largest manufacturer for PVC additives in China, We produce products: PVC heat stabilizer(SS-218 Methyl tin mercaptide),PVC In-lubricant(NX-GH4,NX-G16S,NX-G32),PVC Ex-lubricant(NX-G78,NX-G70s... 