Structurally speaking, fasteners are a general term for a large class of mechanical parts used to fasten and connect two or more parts or components into a whole. They are vividly likened to "industrial rice" . According to the difference in strength, fasteners can be divided into two categories: low strength (or ordinary strength) and high strength. The mechanical performance grade of low-strength fasteners is generally lower than 8.8, or the nominal tensile strength is lower than 800Mpa, and is usually used in ordinary mechanical equipment, electronic appliances, household appliances and other industries; the tensile strength and mechanical properties of high-strength fasteners It is obviously better and is usually used in high-end manufacturing industries such as new energy and environmental protection technology equipment, large-scale rail transit equipment and engineering, aerospace equipment, etc.

Fasteners are one of the most widely used and widely used mechanical basic parts in various sectors of the national economy. Our country is the world's largest fastener manufacturing country. According to data, our country's fastener output will reach approximately 9.29 million tons in 2022, and it is predicted that our country's fastener output will reach 9.7798 million tons in 2023. Although our country's fastener industry as a whole started late, it has developed rapidly in recent years and has become an advantageous industry with a trade surplus driven by enterprises in the industry. According to statistics, our country's fastener exports will reach 4.979 million tons in 2022, a year-on-year increase of 1.4%; the export volume will reach 13.65 billion US dollars, a year-on-year increase of 17.8%, and the unit price and export volume will rise simultaneously.