1. Hand feeling: Good paper towels have high wood pulp content, and feel delicate and soft to the touch, and are not easy to shed powder and hair. Bad paper towels are hard and loose, easy to shed powder and lint.
2. Specific toughness: Take a raw wood pulp paper towel in your hand and pull it with a little force, the paper towel will appear wrinkled, but it will not break. Bad paper towels have low wood pulp content and poor flexibility, and they will break with a little force.
3. Observe the burning situation: the ash of paper towels with excessive fluorescent agent is white or black after burning, while the normal and qualified paper towels are natural gray after burning.
4. Test the state of immersion: good paper towels have high density and great toughness, and will not deform or loosen even if they are soaked in water.
