The general term for metal and non-metal products and accessories installed in buildings or structures. Generally, the utility model has double effects of utility and decoration. The construction hardware starts from the manual workshops such as the iron shop, the copper shop and the tin shop. In Tang Dynasty, there was a nail making workshop in China, which made nails, bolts, locks and rings by hand. However, due to the use of wooden and stone structures in ancient buildings, the development of building hardware has been slow in the past few thousand years. After the 19th century, with the widespread use of metal materials and the needs of social life, building hardware developed rapidly, and many small factories or workshops producing steel nails, hinges, bolts, window hooks, faucets and valves, metal wire woven window screens, etc. emerged. Later, mechanical processing equipment was gradually used to replace manual production, forming a number of professional enterprises. With the continuous improvement of various building facilities standards, modern building hardware products have developed from a single variety to a series, and the requirements for its beauty and decoration effect are also higher and higher. The production technology of building hardware products has also made great progress. Most products have developed from semi manual and semi mechanical operation to semi-automatic or full-automatic mechanical assembly line production. Building hardware has been expanded from traditional copper alloy and low carbon steel to zinc alloy, aluminum alloy, stainless steel, plastic, glass fiber reinforced plastic and various composite materials. The building hardware can be divided into five categories according to the use: door and window hardware, plumbing hardware, decoration hardware, wire nail mesh hardware and kitchen equipment.

1. Door and window hardware. General term for all kinds of metal and non-metal accessories installed on the doors and windows of buildings. There are building locks, handles, braces, hinges, door closers, handles, latches, window hooks, anti-theft chains, inductive door opening and closing devices.

2. Plumbing hardware. General term for hardware used in building water supply and drainage system, heating system and toilet. There are faucets, showers, downpours, toilet accessories, toilet accessories, spray and massage bathtub accessories, valves, pipe connections and other bathroom hardware.

3. Decoration hardware. General term for hardware used in building water supply and drainage system, heating system and toilet. There are combined metal ceiling, light movable partition, metal decorative panel, etc.

4. Screw mesh. A general term for all kinds of wires, nails, nets and mesh products made of carbon steel or non-ferrous metals. It is widely used in construction engineering.

5. Kitchen equipment. It mainly includes washing table, operation table, vegetable cutting machine, stove, stove, oven, cupboard, storer and range hood.