function

    1. Anti-theft performance: class b anti-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. According to the decoration requirements, it can be decorated with different decorative styles;

    2. Door frame, door set and door fan style are integrated;

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

    。