Can flour be stored for a long time in plastic bag packaging and sealing? The coup for flour preservation can directly avoid problems such as insects and mildew. , custom-made plastic bags Now most people use plastic bags, it is easy to carry, the appearance is better than woven bags, the color is brighter than non-woven packaging, and the color is rich. The soul in the process is the prerequisite for packaging production. A reasonable structural design should be comprehensively considered in terms of cost, performance and processability. The characteristics are mainly reflected in the wide selection of materials, advanced technology, high production efficiency, low cost and transportation and sales. , Portable use, etc.