As the leader in the drafting of paper bag industry national standards, we are fully equipped with the most advanced lab in its field and has developed internal QC  standards. To maintain strict quality standards, our lab testing includes smoothness, stiffness, thickness and whiteness of paper, raw materials, in-process and finished products, utilizing testing equipment such as UV spectrophotometer, MDS, etc. Our Traceability system starts from incoming inspection to finished product which allows us to trace back all related raw material, finished goods, machinery, operator, and QC in 2 hours.