PP Woven Bag, Valve Bag, FIBC manufacturer / supplier in China, offering Flour Chemical Powder 25kg Durable Environmental Material Kraft Paper Valve Bag, 10kg 25kg 50kg 3layers High Load-Bearing Wear-Proof Kraft Paper Valve Bag, 3 Layer BOPP Kraft Paper Packing for Putty Powder Flour Carbon Black Paper Valve Bag and so on.