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with a light, mat insulation, corrosion resistance, easy processing characteristics, plastic bags have certain characteristics of plastics also have their own unique features: 1, light weight plastic light, commonly the woven polypropylene without adding fillers, which is equal to the density of the polypropylene, the application density of the polypropylene plastic bags of 0.9 grams per cubic centimeter, and typically, the bags are lighter than water. 2, high breaking strength is a flexible plastic bags in plastic products, high fracture strength of the material, if used to measure the

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