Monolithic cells chipping length ≤2mm, depth ≤1 mm, the number of ≤1 months; can not have a V-shaped and zigzag chipping; the same component allows up to four
Monolithic cells missing angle length is less than or equal to 2 mm, the depth is less than or equal to 1 mm, number is less than or equal to 1; no lack of V type and zigzag angle; the same component allows up to 4