... , Acid, alkali, salt, corrosion resistance, non-toxic Plastic Extrusion Wwelding Rod/Plastic Welding RodIntroduction:1), The product is PE ... resin of the extrusion and into solid round products, colour and lustre is ... , corrosion resistance, non-toxic. 3), Product use: for plastics extrusion welder welding plastic board, in the production, pipe fittings manufacture ...