2013-07-03 by wsdchemicalAt present the domestic PVC stabilizer has lead salts, mainly in the whole PVC industry, PVC heat stabilizers overall grouped into three categories: 1. Lead salt heat stabilizer: There are three salt, two salts, organic lead salts, etc. 2. Organotin thermal Stabilizer: a methyl tin, dibutyltin octyl tin 3. mixed metal salt stabilizer: they are calcium, potassium, magnesium, barium, zinc, cadmium, lanthanum, and an organic metal salt such as hydrotalcite auxiliary stabilizers, anti-like oxygen mixture. Currently on the market with calcium and zinc, barium, zinc and barium cadmium zinc three systems-based, there are three forms of such products.