function

    1. Anti-theft performance: class a guard against theft;

    2. Sound insulation performance: the sound insulation can reach 35 decibels;

    3. Thermal insulation performance: the heat transfer coefficient K is less than 2.0W/m2.K.

    4. Airtight performance: air tightness is not lower than grade 4;

    5. Fireproof performance: fire-resistant time 1.00h;

    6. Durability: through repeated opening and closing of 200,000 times.

 The characteristics of

    1. The 3D hinge structure is adopted, and the door panel can be made of wood grain steel plate with stable structure, fashionable, simple and elegant appearance.

    2. Opening the door frame size is narrow, the shape is straight, the line feels strong.

    3. The side of the door fan and the upper side of the door are covered with seam pressure, so as to play the role of anti-prying.

    4. Anti-theft, sound insulation, fire prevention and sealing.