Profile: Shanghai Tongyi Chemical Factory is a manufacturer of complex heat stabilizers for PVC, color concentrates for PVC and fluorecent brighteners. We are an ISO 9001:2000 certified company. Our product line includes poly-((6-((1,1,3,3-tetramethylbutyl)amino)-1,3,5-triazine-2,4-diyl)-2,2,6,6-tetramethylpiperdinyl)imino)-hexane-1, 6-diyl-((2,2,6,6-tetramethylpiperidinyl)imino)), 2-(2'-hydroxy-3'-t-butyl-5'-methylphenyl)-5-chlorobenzotriazole, 2,2'-methylenebis(4-t-octyl-6-benzotriazolylphenol) and 1,1,3,3-tetramethylbutylamine. We offer heat stabilizer, color concentrates such as phosphite series, liquid PVC heat stabilizer series, powder BZ and HCZ frothing PVC heat stabilizers.