PP Woven Bag, Valve Bag, FIBC manufacturer / supplier in China, offering Plastic Bag with Valve Port Loading Cement Putty Powder with Bulk Capacity 10kg 20kg, Empty Package with Lamination Craft Material 25kg 50kg Durable PP Bag with Valve Port, Customized Thickness Dimension Bulk Sack with Square Bottom PP Valve Bag and so on.