Container bag: (ton bag, space bag, English name : FIBC, big bags, bulk bags), can be customized 0.5 tons to 3 tons, is a flexible packaging container, with container bags: dustproof, moisture-proof, safe and firm. It has sufficient strength in structure, convenient operation for loading and unloading, and suitable for mechanized loading and unloading. It is divided into square container bags and round container bags. There are two lifts and four lifts, and the material can be coated with inner film, outer film or PE inner bag to achieve moisture-proof effect.