? Plastic bags by major material for polypropylene bags, polyethylene bags; method divided by sewing the seam bottom bags, seam side bottom bags. Now widely used in a packaging material fertilizers, chemical products and other items. Its main production process is the use of plastic raw materials extruded film, cut, one-way stretch of flat, woven through the warp and weft get products, commonly referred to as bags. Plastic bags main specifications: 30-105cm, mainly produces plastic bags, color bags, film bags, inner film bags, fertilizer bags, feed bags, chemical bags and other large bags