ThreeSinha folding door is the fashion representative of the rolling door. Curtains are made from engineering plastics made of polycarbonate (pc bullet proof rubber). The crystal shutter door provides a stylish look for trendy clothing, brand monopoly, trendy mobile phones, and other trendy shops. It has a certain waterproof and windproof effect. The connecting ribs of aluminum alloy enhance the protective effect and are available in specifications such as frosted, transparent and colored. It can be used in workshops, markets, office buildings, exhibition halls, and home decoration. It also can install in the inner door or outer door which has the functions with thermal insulation, dustproof and noise reduction