PP Block Bottom Valve Bags Custom 40kg Polypropylene Wall Putty Packaging Sack with Valve 20kg Waterproof Square Bottom Woven PP Valve Cement Bag 20kg Woven Valve Pocket Polypropylene Empty Bag for Putty Packaging 40kg Woven Polypropylene Empty Dry Cement Mortar Bag 40kg Custom China Factory BOPP Film Coted Polypropylene Woven Sack For Wall Putty 50kg White PP Cement Valve Packaging Bag 25kg Building Material Coated Woven Polypropylene Valve Bags 25kg Base Coat PP Woven Valve Bag 50kg Empty PP Cement Valve Bag 25kg Laminated PP Valve Adhesive Tiles Block Bottom Packaging Bag 25kg Ceramic Tile Adhesive Woven Polypropylene Block Bottom Valve Bag 25kg Putty Compound Block Bottom PP Valve Bag 12