Documents closed envelope used in transport,packing document and sitck in the box or carton.Widely used in DHL,UPS,TNT and so on,express company. Specification : Top Layer - Clear LDPE 45 micron Bottom Layer - Clear LDPE 35 micron Adhesive -20 - 25gsm Hot melt Release Paper - 40 - 45gsmKraft (white) with full-face silicone coating M.O.Q: 100,000pcs per item Packing: Bulb pack.(1000pcs/carton) Delivery:20days after receipt of your P.O. & Deposit. Payment: 30% deposit, balance by T/T before sending Bill of Lading.