As a common and widely used material, quality defines market portion. And in order to control quality, we need to get control before it sells on market.

1, keep an eye on the chemical mineral go through producing. The mineral need to be lab-checked qualified, reject any disqualified material. And and also the raw paper need to be purchased from standard supplier.

Finished products should be wrapped in good stand, with poly film and sealed.

All process must strictly according to manufacturing method, and documented, making sure glue weight, volatilization, and solidity comply with requirement.