A. Preparation before machine operation (checking materials, CTP version content), ink preparation (four-color, spot color, etc.), whether the machine is working properly, etc

B. First article confirmation (for both versions and orders); Confirmation of content, correctness of paper, confirmation of printing corner lines, color confirmation, and verifier (captain, supervisor, quality control)

C. Process inspection: One sample of 1000 pieces should be retained, including color verification, content, paste, dirty spots, ink spots, etc