Film Lumping, Carbonization and Burning |
Max diameter: 2 cm.
When defects are slight, unobvious, and diameter ≤1 cm, it should not more than 2 per face, slight and unobvious means defects can not be visible within 1.5 m; When defects are 1-2 cm, it should not more than 2 for each sheet, and quantity should not over 10% in the total order.
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