... humidity 40%~70.Application:1. Advertising on car window, bus window, train window, tram window, Metro window, etc. 2. Widely used in retail outlets, POP ... displays, service stations, convenience stores, etc3. Ideal for window advertisements on buildings, offices and shops etc. 4. Suitable for ... one roll is 50M.2. Special Specification can be specified. Perforated Vinyl film