... acid, alkali, aqua regia and various organic solvents corrosion. 4, a low coefficient of friction (0.05-0.1), ... films, gaskets, lining ring. High-frequency copper clad laminate board. 4, heat-resistant cladding layer; laminated substrate, thermal insulation body ... Color: brown, beige, white, black, black and silver pink. 4. Coating method: double-sided coated, single-sided coating, breathable coating ...