Polypropylene resin is the main raw material for woven pp bag.It is firstly extruded , stretched into flat fiber , and the flat fiber is weaved into fabric .Then the fabric is sewn into pp bags. The printing of these kinds of bags can be common or multi-colored. Woven pp bags are extensively used by people , especially in industry. It is mainly used for packing various products with the advantage of environmental protection. We can produce many sizes depend on customer~s require