1.PE material: the material is divided into a high pressure (LDPE) and low feed (HDPE). From the appearance of the high-pressure feed relatively smooth, soft, toughness is good, a lot of handbag raw materials are produced using high pressure feed. Low pressure material tension well, high hardness, widely used in shopping malls, various procurement markets. The easiest method to distinguish between high and low, with Shredded produce white marks proved to be a low pressure vest bags, because low pressure is high density, it will have white marks, no white marks that tension is generally a good high pressure. 2.PP material: solid body hard, but relatively high transparency, clearer, tension is not very good, explosive mouth. Mostly for gift wrap, and finished apparel sales, we bought new clothes and have the kind of plastic bags wrapped layer of double-sided adhesive seal products are usually bags of po. PP bags very transparent, feels very slippery, there will be folded to its fold, folded PE bags do not. 3.OPP material: the most brittle material, the most transparent, tension is not enough food vest bag, but the most explosive port and most likely bleaching printing gap is difficult if not torn, but there was a slight gap with a little effort you can not tear. On. Made in our daily life vest bag, whether it is to go grocery shopping, or save items, we will use the plastic bags. But we can not blindly upon use of plastic bags, when used to note the following questions: 1, the intensity of a qualified plastic stronger than unqualified, not a tear on the break. 2, to see whether the impurities in a plastic bag. The plastic bag in the sun or under the lights roll vest bag, to see if there are black spots, there is no hole. 3, for the plastic bags used for packaging food, we need to look at the use of plastic bags, whether the appearance of the "food bag" sign. 4, stroking plastic surface is smooth non-toxic. If the color mix dim, sticky touch, astringent, it is toxic. 5, smell is the smell of plastic bags, whether people feel sick. Qualified should be no odor, but failed due to the use of plastic bags additives, will carry a variety of flavors. Vest bag manufacturer made manufacturers _ _ Akei Commodity Guiyang Guiyang Akei vest bag provided by Commodity Limited. Guiyang Akei Commodity Co., Ltd. (www.gyyqsld.com) (www.gyyqsld.com) quality of service and products, continue to receive the recognition and trust of new and old customers and the industry. Our company is a certified member of the whole network Commercial Union, Commercial Union customer service icon on the page, you can talk directly with our customer service staff, to our future cooperation happy!