UHMWPE Board,UHMW Polyethylene Board,High Quality Plastic Board. Borated uhmwpe sheet. 5% boron-containing polyethylene sheet is a new type of HDPEelding material made of polyethylene and boron carbide at high temperature molding to replace borax and paraffin. gen in boron-containing polyethylene sheet can accelerate the HENAN OKAYorption of