The paper box packing usually uses the material to be exquisite, the modelling is specially exquisite, therefore the paper box packing itself also usually has certain ornamental. At the same time, carton packaging is widely used. To judge whether a carton is qualified or not, the first requirement is that the surface is clean and level off, free from folds and damages, and free from stains and impurities. Font, pattern should be clear and correct, no wrong printing, leakage printing, no ink pollution