... Conveyor Belting,PE,Polyolefin.poxy resin,Polyamide,coating,etc zinc borate is one of enviorment -friendly halogen-free flame retardant,used ... or complete replacement of antimony trioxide.We supply zinc borate 2335,zinc borate239 and zinc borate237.The main properties ... of zinc borate are high flame retardant,obviously smoke-removing,non-toxicity, ...