King Courage Development Co.,Ltd was founded in 2000, we are involved in the manufacture and distribution of dunnage bags in China, used to secure complete shipments in or on trucks, containers, ships, railway cars etc. Our dunnage bag are available in many different sizes and materials to meet your needs,--- the outer layer is made of many material, such as paper and woven pp laminated, polyethylene ,Woven Polyproplene, muti-layers craft paper, the inner layer is made of LDPE. All these bags have an outstanding stabilizing capacity, withstanding tons of pressure and resistance to load shifting.