Hardener hardener, also known as a curing agent or a curing agent. Its main role is to make the linear molecular structure of the polymer cross-linked into the molecular structure of food bags procurement body, so that the resin has thermoset. Phenolic resin curing agent is commonly used methenamine (hexamethylene tetramine). Epoxy curing agents are commonly used amines, anhydrides PE film: Transparency slightly less cpp, but softer than cpp, PE film is better tensile properties, tensile strength is better. There are white and transparent PE two kinds of PE (HDPE / LDPE / LLDPE), feel softer. PA film (nylon): PA relatively tough food bags printed material, transparency and wear puncture-resistant food bag manufacturers, easily oxidized, easy to shrink and wrinkle, this material is suitable for installation similar bone products. Markets a wide variety of products, food bags, food bags and beautiful it is to attract the attention of many consumers, and produce the desire to buy. Food bags visited found that regular food bags product quality is also better, in a prominent position has QS logo on grocery bags, but there are many food products, especially plastic bags a class of products, and some simply do not identify, also Some bags are already banned ultra-thin plastic bags, but when businesses use these plastic products come directly imported food when dressed, very few consumers are concerned about their safety. Purchasing food bags _ Red Plastic Factory (certified) _ food bags provided by Xiong Red Plastic Factory. Xiong Red Plastic Factory (corp.1688.com/page/index.htm?memberId=poqwe321&fromSite=company_site&tab=companyWeb_detail) Hebei Baoding, a leader in plastic bags over the years, the company implementing the scientific management, innovation and development, honesty and trustworthiness policy, and satisfy customer needs. Red plastic factory in leadership with the staff warmly welcome all inquiries negotiations to create the red flag Plastic Factory a better future.