... metals, such as Pb, Zn,Cu, Mn, and so on. Owing to its well anticorrosion and permeability resistance ability, ... resistance ability: inner surface is adopted high-quality unsaturated polyester resin or vinyl resin, gel content ≥70%,and fiber material adopted surface ... Shangwei Company as high quality of anticorrosion heat-resistance resin, and Changzhou Tianma Group’s glass fiber cloth and ...