Auxiliary and accessory products used in daily life and industrial production. Early multi-purpose gold, silver, copper, iron, tin and other metal materials, so named. In addition to the use of various metal materials, but also widely used plastic, glass fiber and other non-metallic materials. Hardware products have played an important role in the process of human survival and development. With the development of social economy and the refinement of social division of labor, hardware products are gradually enriched and improved, more and more varieties. Modern hardware products can be divided into three categories according to the use: daily hardware for daily life, hand tools for production and living auxiliary tools, and building hardware for connecting parts, fasteners and supporting facilities in buildings and structures. Hardware products of metal materials are generally made by forging and pressing, mechanical processing, surface treatment and other processes. The purpose of the surface treatment is to prevent corrosion and look beautiful. Metal products of non-metallic materials are formed by mold or pressure, which is light and convenient.
The last one：An overview of hardware products
Next：Hardware accessories rustproof small method