Outdoor fixed LED display (SMD or DIP) is widely used at stadiums, shopping malls, airports, plazas, buildings, highways, railway stations, gas stations and so on, serving for both commercial purpose and everyday life. In terms of its permanent installation mode, it’s commonly known as column LED screen, roof top LED screen, curve LED screen, circular LED screen, wall mounted LED screen, vehicle LED screen, hanging LED screen, double sided LED screen, front service LED screen, dual maintenance LED display, stadium LED screen, perimeter LED screen, etc. The available pixel pitches are P2.5mm, P2.94mm, P3mm, P3.33mm, P3.84mm, P4mm, P5mm, P6mm, P8mm, P10mm, P16mm, etc.