Some common factors for magnetic ball quality control:
1.Appearance
2.Quantity check
3.Smell test
4.Function test
5.Carton dropping test
6.Material check
7.Odor test
8.Logo/Printing 3M Tape test
9.Rubbing test
10.Magnetic test
Some common factors for magnetic ball quality control:
1.Appearance
2.Quantity check
3.Smell test
4.Function test
5.Carton dropping test
6.Material check
7.Odor test
8.Logo/Printing 3M Tape test
9.Rubbing test
10.Magnetic test