Casement door is a very commonly used in alu doors,Casement door is a door with certain anti-theft function, also can distinguish between indoor and outdoor, so in addition to more beautiful, also has the effect of heat preservation and sound insulation. Casement doors are pushed inward or pulled outward. alum doors refers to the hinge (hinge) mounted on the side of the door, inward (left inward, right inward) or outward opening (left outward, right outward) of the door. By the door set, hinge, door, lock and other components. Advantages of casement doors 1, good sealing, required to effectively prevent the wind and sand dust, or other impurities into the house. Casement door than other doors in the surrounding more a layer of gel protection, in use, can be effectively isolated. 2, high security, casement door in the security performance, compared to other doors is higher. Flush door can be used when the installation of locks. 3, more materials to make flush door material is very much, wood, glass, aluminium doors and windows and so on can be used to make into a flush door, so in terms of price, the choice of flush door is more. Aluminum profile swing doors are now widely used in bathroom doors, bedroom doors, office swing doors, bathroom swing doors, because it has the benefits of waterproof, aluminum profile color can be customized, solid and durable, no rust, so it is loved by the majority of customers.