For this reason, plastic packaging is one of the four major materials in the packaging industry: paper and cardboard account for 30%, plastics for 25%, metals for 25 and glass for 15%. The above two 25% fully illustrate the importance of the plastic packaging industry. Although the plastic packaging industry is now the second-place packaging materials, its practical surface than paper and cardboard packaging. But the plastic packaging industry is growing at a rate of 5% a year, while other packaging materials, including paper and cardboard, metal, glass, pottery, cotton, etc., are growing at a rate of only 2%, so one day the plastic packaging industry will grow. Will surpass paper and paperboard to become the first packing material.