Medical hermetic door is developed by entrance solution, which specifically designed for the special room that needs high quality cleanness and air tightness. The door is in high pressure polyurethane foaming process, which reduces the weight of the door and improves the sound insulation, thermal insulation and heat preservation effects. Depending on the perfect design such as dustproof, fireproof, pressure difference resistance and anti-radiation, hermetic door attracts wide attention since its release.