Vest bag factory-century Bin (certified), vest bag provided by the United Xiong Bin Paper Packing Co. century. Xiong Bin-century Paper Packaging Co. (www.sjlbbz.com) is specialized in "plastic bags, packaging bags, vest bags, food bags, advertising bags, bags, woven bags," the enterprise, the company of " honesty, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: TUNG. PE inside vest pocket additive added to oxidative degradation, the proportion of 1-2%, the additive on the market there are more susceptible to identity and D2W EPI additives. Oxidative degradation principle vest bag factory, is to change the molecular chain of plastic, making it more susceptible to degradation. Big selling smaller vest bag, small variations broken. You can also degrade in 1-5 years. Some countries are also popular recognition. PE additive which added to oxidative degradation, the proportion of 1-2% in the vest pocket supplier of additives on the market there are more susceptible to identity and D2W EPI additives. Principle of oxidative degradation, is to change the molecular chain of plastic, making it more susceptible to degradation. Large becomes small, becomes smaller pieces. You can also degrade in 1-5 years. Some countries are also popular recognition. So this kind of film, and the film made from convenient bags are not suitable for containing food. To facilitate the identification of PVC and polyethylene bags convenient bags, available in the following simple method of identification. So this kind of film, and the film made from convenient bags are not suitable for containing food. To facilitate the identification of PVC and polyethylene bags convenient bags, available in the following simple method of identification. So this kind of film, and the film made from convenient bags are not suitable for containing food. To facilitate the identification of PVC and polyethylene bags convenient bags, available in the following simple method of identification.