... three layers (kraft paper, PE coating, and plastic woven fabric.)2- Its a new type of bags with high intensity, toughness, and ... plastic) is made of kraft paper, coating, and weaved cloth---A total of the three-tier (craft paper, coatings, weaved cloth). Adopt ... from composite wood composite base. As a new type of packaging bags, it has a high strength, toughness, and moisture-resistant properties ...