Also known as an express courier bag. It’s made of low-density polyethylene (LDPE) and Linear low-density polyethylene (LLDPE). The advantages of express courier bags are that they are produced with low cost, light weight, foldable and waterproof. As the market’s awareness of environmental protection heightens, RGP can provide both options of either PCR material flyer or a-100% fully biodegradable Flyer products intact.