Foil bag vacuum bag, made of multi-layered composite materials, high temperature layer structure composed of an adhesive layer + + + aluminum foil (nylon) + heat seal layer, thickness: 6-27 wire, excellent moisture and oxygen barrier properties, shading, shielding properties, electromagnetic properties, can be evacuated. Applies to easily gasified volatile gas or moisture, oxidation demanding fine chemicals, intermediates, welding wire, metal powder bags moisture-proof anti-corrosion materials. Can effectively prevent the product from moisture caking, oxidative deterioration phenomenon occurs and extend product storage time. Suitable for packaging machinery and equipment, can effectively prevent the erosion caused by the product surface moisture oxidation rust, peeling paint and other phenomena occur. Particularly suitable for marine climate export of equipment transport packaging. Suitable for high moisture and require anti-static precision instruments, electronic products packaging.