Product was designed and manufactured according to Faraday, Use of three / four-layer structure (PET /aluminum foil / nylon / PE), the products are well waterproof, moisture-proof, anti-static, anti-electromagnetic interference and electrostatic shielding, high mechanical strength, and great heat sealing. Particularly applies to packaging the electronic components, precision machinery and equipment, chemical raw materials, food, and pharmaceutical products, these stuff need to be anti-static, moisture-proof.