1. Use good thermal break aluminum profile. The thermal break design, one rubber sealing and double mohair sealing, with the hollow glass system, all these make the window acchive excellent insulation funtion. 2. The noise test result shows that the indoor noise can control within 30-40dB. Even though your house is beside the high way only 50m, you can enjoy a quiet atmosphere. 3. Aluminum color is rich. Customer can choose any color to match there house style, show special taste. 4. Thermal break aluminum is enviromental friendly material, which does not contain any harmful substance, and most important is: It can be recycled in high percentage. 5. We are manufacturer having 10 years experience in doing windows and doors. Warm welcome customer to provide us your design drawing, and we can meet your needs!