FR pp tubing; Pe tubings; UHMW- pe slab; PE mud discharge tube; Pe water supply tube; Pe drainpipe; Teflon sheet; Teflon tubing; Teflon rod; teflon spacer, fittings; macromolecule polyethylene; UHMWPE; macromolecule polyethylene slab; macromolecule polyethylene; macromolecule polyethylene slab; macromolecule polyethylene machine fittings; macromolecule polyethylene parts and fittings of machinery; HD