insights

[vc_row][vc_column][vc_custom_heading source=”post_title”][vc_column_text] 1.Break Cold stamping die convex, concave mold in the course of use, sudden appearance of breakage, breakage and cracks. Since the convex and

[vc_row][vc_column][vc_custom_heading source=”post_title”][vc_column_text] 1. Parting surface, that is, the contact surface where the die and the punch cooperate with each other when the mold is closed.