exterior commercial double steel door

1) Insulated aluminum alloy architectural aluminum used between two aluminum alloy
insert at the end of insulation and the use of glass production and processing methods which ultimately achieving energy-efficient off heat, reduce noise,lightening-protection,environmental conservation
2) It has heat insulation and warm-keeping properties;  after preparing the Insulating glass, it will improve the heat and sound insulation features more, and can realize double-colors between outer and inner sides;