The new crown virus has been raging for nearly two years. According to past experience, it should be coming to an end soon, but he does not seem to stop at all. It may be his last struggle, or...
kind of Automatic Hermetic Door. By setting a sealing device at the lower end of the door leaf, when the door leaf and the door frame are closed and closed, the movable rod of the sealing device c...
Due to the particularity of its environment, the operating room of the hospital often requires the operating room door to have the functions of hermeticness, sound insulation, heat preservation, pr...