HOPO aluminum tilt & turn adopts high strength alloy and aviation materials for every accessories. Moving accessories adopt nonmetal materials fixed, stable and smooth during opening and closing, accurate location; standardized design to install easily and efficiently. 

ATT50 with intricate hinge, compact structure, easy installation, safe and reliable, Max. sash weight 100kg.

ATT60 is specially designed for huge window sash and hinge binding point moves to force position of frame and sash. It can realize 3D adjustable, and bearings adopt abrasion-proof material, Max. sash weight 130kg.