The elastic broken bridge insulation frame made of synthetic materials is installed between the inner and outer layers of the door body, which is not only insulation, but also can offset the thermal expansion and contraction caused by the temperature difference between the inside and outside. Regardless of the heat and cold, the insulation effect of the compact flame retardant insulation layer is far more than the general wall, and the insulation effect of the compact flame retardant insulation layer is far more than the general wall. To provide you with a comfortable living environment.

The multi-layer composite material of Heinrich copper door effectively blocks outdoor noise, and the thick copper door plate is equipped with an inner 6-level security joint layer. The sound insulation effect has reached 36db after testing by the German authority. Effectively shut out most of the noise, allowing you to enjoy the quiet.