Thermal break is a continuous barrier between the inside and outside window/door frames that prevent conductive thermal energy loss. Sound Insulation: Imported sealing strip ensures that the window is well sealed, its structure is carefully designed, the joints are tight, the experimental results, sound insulation 35db, which is in line with national standards Impact resistance Since the outer surface of the casement window is aluminum alloy profile, the impact resistance of the aluminum alloy is better than other doors and windows materials. Air tightness Multiple sealing tops or strips are installed at each joint of the heat insulation window. The airtightness is eight grades, which can fully exert the air conditioning and save 50% energy. Watertightness The doors and windows are designed with rainproof structure to completely insulate the rainwater from the outside, and the watertightness conforms to national standards Anti-theft Excellent hardware accessories High-quality materials ensure window security Maintenance-free Broken bridge insulation profiles are not easily attacked by acid and alkali, will not turn yellow and fade, and almost no maintenance. When it is dirty, it can be cleaned with water.