Suzhou composite shielding bag material structure is divided into: APET / CPP (half aluminized / PP cast film) transparency, rather hard, feel very, tear strength is relatively weak and APET / CPE (half aluminized / polyethylene film ) heat sealing, good tear, tensile strength, and feel quite soft two, the overall color is silver-gray translucent implant visible. Can be made into a variety of styles: flat pocket, self-styled (compact bag / zipper bag), envelope-style, self-adhesive envelopes, Siamese-style, three-dimensional, etc., body bags printed pattern according to customer requirements; surface resistance inside and outside : 108-1011Ω. The unique structure will produce induction hood effect the goods inside the static field, to prevent the accumulation of static electricity, from electrostatic damage, is the preferred anti-static bag it. Intelligent packaging materials. 4.0 With the advent of the industrial era, the development and application of intelligent packaging, food packaging will become the new trends, with a huge market potential. It is expected that future smart packaging food contain more complex, remote-readable non-visual information. Safety labels and radio frequency identification (RFID) tags are at the beginning of an electronic tag, in addition to product identification information, date of production, price, electronic tags can be used as time - temperature, leakage, or freshness indicator.