... Durable & tearing resistant c.customized size,logo d.Waterproof & recycle plastic postage bagscourier bag and mailing bag, express delivery bag, ... :2008 quality certification, anti-static and shockproof. 7.kinds of raw materials: PO, PE, OPP, PP, PVC, CPE, PO/PE ... and composite material, non-woven fabric eco-friendly materials, biodegradable materials. Can provide ISO and SGS certification.If you ...