1. 25kg kraft paper bag: three paper bags, four-layer paper bag, multilayer paper bag. Waterproof PP material poured a layer of film, since the paper; using imported Russian yellow kraft paper or white kraft paper of Canada. Additional endometrial bags can also be color offset printing. Sew the bottom opening in the form of environmental protection, health. Multilayer kraft paper bags: the perfect composite material imported kraft paper and domestic kraft paper, kraft paper and PP material woven bag plus PE bag, the complete composite food grade requirements. Arbitrary choice for your packaging. Style: the seam bottom opening type, Bottomer opening ceremony. Export enterprises more choice of packaging. Can be mainly used for packaging chemicals, food additives, feed additives, pigments, powdered milk, dry mortar and other building materials, paper-plastic bag: also known as three-in-one composite paper bag, a small bulk containers, mainly human or forklift unit of transport, it is easy shipment the careen in bulk powder granular materials with high strength waterproof, Koryo appearance, ease of handling and other characteristics, and is one of the most popular and practical common packaging materials. Process Description: outside a refined white of kraft or yellow kraft paper, inside plastic woven PP melt the plastic particles by high temperature and high pressure, kraft paper and plastic woven composite together plus endometrial bag. The form of a paper-plastic bag the same the seam bottom open pocket. Has good strength, waterproof superior characteristics. 3 square bottom open pocket: also known as: spacious pocket square bottom. Is a packaging bag both traditional thinking and advanced ideas, the overall effect of the bottom of the bag is square, so that the bag can be comparable with the bottom valve pocket; opening is flat mouth, the bottom of the seam open pocket packing sealing the same way, suitable for traditional sewing sealing manner, the middle of the paper can add a layer of plastic film products for packaging needed moisture. 4 square bottom valve pockets: commonly known: bottomer bags, packaging bags is an efficient packaging, convenient transportation ideas under the guidance of the birth. The overall appearance of the bag is square, very suitable for stacking and transportation; the bottom of the valve port, to facilitate the filling material, and the seal is simple. The new environmentally friendly packaging, suitable for canning equipment can be divided into: paper-plastic composite valve pocket or multi-layer paper valve bags. In order to easy filling, punch holes in the bag body, to facilitate the gas exhaust and prevent the burst bag filling. The middle of the paper can add a layer of plastic film for packaging moisture-proof products. Film bags: kraft paper bag or paper-plastic bag coated with a layer of waterproof light membrane instead of cardboard drum, plus endometrial bag. The form of the same seam bottom open pockets. Has superior strength, waterproof.