... be painted, screen printing or vacuum coating 5. Non-toxic: Even with the long-term exposure can also harm people, and does ... , 20mm Applications 1, construction: windows, soundproof windows and doors, mining mask, telephone booths, etc. 2, ad: light boxes, signs, signage, ... sheet when the soapy water with 1% only with a soft cotton cloth moistened with soapy water, not with a hard object or dry ...