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A general term for various metal and non-metal fittings installed on doors and windows of buildings. It plays an auxiliary role when opening and closing doors and windows. The surface is generally plated or coated, which is strong, durable, flexible, economical, and beautiful. Door and window hardware can be divided into building door locks, handles, braces, hinges, hinges, door closers, handles, latches, window hooks, anti-theft chains, induction door opening and closing devices, etc. Door and window hardware is a general term for the metal components of doors and windows. Mainly include: (1) ordinary hinge: used for cabinet doors, windows, doors, etc. Materials are iron, copper and stainless steel. The disadvantage of ordinary hinges is that they do not have the function of spring hinges. After installing the hinges, various bumps must be installed, otherwise the wind will blow the door panel. Pipe hinges: also called spring hinges. It is mainly used for the connection of furniture door panels, which generally require a thickness of 16-20 mm. The material is galvanized iron and zinc alloy. The spring hinge is attached with adjustment screws, which can adjust the height and thickness of the plate up and down, left and right. One of its features is that it can match the opening angle of the cabinet door according to the space. In addition to the general 90-degree angle, 127-degree, 144-degree, 165-degree, etc. have corresponding hinges to match, so that various cabinet doors have corresponding stretches. Door hinge: It is divided into ordinary type and bearing type. The ordinary type has been mentioned before. The bearing type can be divided into copper and stainless steel in terms of material. From the perspective of consumption, more copper bearing hinges are used, because their style is beautiful, bright, affordable, and equipped with screws. Other hinges: glass hinges, countertop hinges, and door hinges. The glass hinge is used to install the frameless glass cabinet door, and the thickness of the glass is required to be no more than 5~6 mm. (2) The hardware of hinged doors and windows is divided into hinges and concealed hinges. The open hinges are the ones we usually see used in most doors and have no resilience. Concealed hinges are mostly used on furniture, and can be divided into hydraulic, quick-loading, framed doors and ordinary ones. (3) Track: sliding door track, hanging wheel, glass pulley (4) Latch (light, dark) (5) The door suction is installed behind the door. After the door is opened, it is stabilized by the magnetism of the door suction to prevent wind blowing will automatically close