Established in 1960. Shanghai Changfeng Chemical Industrial Factory is a well-known enterprise specializing in coating agent manufacturing. It is also one of the earliest and largest manufacturers of naphthenic acid, naphthenate and isooctanoate. We have powerful technical force, complete facilities and advanced technology. Our enterprise turns out diversified products of ten series falling into many categories and nearly one hundred varieties. They are widely used in the fields of coating, gla...