Adding a coloring agent in plastics, can make plastic with bright colors and shiny. Coloring agents often use various pigments and dyes, food bags main material is generally polyethylene PE PP polypropylene food bags, food bags widely in food packaging bags of food manufacturers must have QS certified plastic rapid electrical discharges. In accordance with the different variations that occur when heated, the synthetic resin can be divided into two kinds of thermoplastic resins and thermosetting resins. No special requirements such as buyers choose the courier from this store, then choose the courier company delivery. Under normal circumstances the buyer after payment the same day or next day delivery empty food bags, food bags, Nanjing special circumstances, I will contact you. Encountered holidays need to be postponed. Each of the local courier qualities and attitudes differ, express the company's efficiency and quality of service varies greatly, courier place if neglect or artificial delays for third-party factor, there is a problem, I will actively assist you with food bags, please Members buyers friend understand! Whether it is the post office or courier company, has delayed the possibility, if you encounter this situation, please do not worry, contact me to help you query. Nanjing food bags, linking Bin century, food bags provided by the United Century Paper Packing Co., Xiong Bin. Xiong Bin-century Paper Packing Co. (www.sjlbbz.com) quality services and products, and are subject to approval and trust of new and old customers and the industry. Our company is a certified member of the whole network Commercial Union, Commercial Union Support icon on the page, you can talk directly to our customer service staff, to our future cooperation happy!