Kunshan shielding bag can effectively isolate objects with external electrostatic field to prevent static bag to protect the items from electrostatic damage, but also anti-electromagnetic interference for PCB, LED and other static-sensitive components. Kunshan shielding bags can maximize the protection of sensitive electronic components from electrostatic potential hazards. Their unique four-layer structure can be formed to protect the goods inside induction effect and electrostatic field isolation. In addition there is a layer consisting of ethylene to eliminate static electricity, can prevent static electricity in the bag. This can be heat sealed bag is translucent, you can clearly recognizable from the outside interior items. The surface resistance value can be achieved: 10Ω ~ 10Ω. Food issue has been broad interest in the problem of removing the food itself, the packaging has become another important issue. As food bags material is not the same, so he has the particularity itself is different. As personal food composition, its quality, the printing ink is also very important. Some exquisite designs printed bags, with a lot of ink, benzene substances containing it more if it exceeded the residual amount of words, for human consumption after it, it may cause chronic poisoning. Many companies blindly pursue excessive beautifully packaged, often ignored issue of food security.