4.1 Adhesion test, using 3M tape / sealing tape to stick off after the test. <br>4.2 Wipe off with anhydrous alcohol 10 times, peel off, discolor <br>4.3. Silk screen parts wipe back and forth 10 times with n-ethane, the silk screen comes off <br>4.4. Silk screen has flash, Blurring, ghosting <br>4.5 Screen printing trademarks, menu names, etc. are skewed <br>4.6 Poor screen printing on doors, windows, panels, and screen printing errors
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