Gravure Common Fault - Bite

In overprinting, the second color ink sticks off the first color ink. Reason: After the first color ink layer is not completely dry, the second color pressure is too large, or the machine speed is too fast, or hot and cold air is bad, poor substrate printing, can cause bite. Countermeasures: Fin-----

Outdoor sports, more hiking, need to be vigilant

First, the precautions on foot 1. Walking is a kind of whole body exercise. Pay attention to balance your body and adjust your pace with your swing arm. Change the walking posture from time to time, such as walking and running, and jogging for 5 minutes per hour. The foot can-----