express bag: registered ISO 9001:2008 and 24001:2004 Material: LDPE, HDPE, LLDPE coextrusion polythene laminated material; Self-sealing stripPrinting: 1-6colors available. Usage: be widely used in express company like EMS, Fedex, UPS, TNT, DHL and so on. And also be used to pack clothes, garments, tape, CD, camera lens, film, mini-type machine……