Auxiliary and accessory finished products was used in our daily life and industrial production. In the early days, it was mostly made of metal materials such as gold, silver, copper, iron, and tin. In addition to using various metal materials, non-metallic materials such as plastic and glass fiber are also widely used.
Metal products have played an important role in the development of human beings. With the development of social economy and the refinement of social division of labor, metal products are gradually enriched and improved, and there are more and more varieties.
Modern metal products can be divided into three categories according to their uses: daily hardware used in daily life, hand tools used as auxiliary tools for production and life, and construction used as connectors, fasteners and supporting facilities in buildings and structures Hardware. Metal hardware products are generally made by forging and pressing billets, machining, surface treatment and other processes. The purpose of surface treatment is to prevent corrosion and look good. Hardware products made of non-metallic materials are mostly molded or pressure-formed, which are lightweight and convenient.
Post time: Oct-26-2021