Fasteners are fastened and widely used for a class of mechanical parts.

      In a variety of machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, instruments and supplies, can see all kinds of fasteners.

      It is characterized by a wide variety of specifications, performance, different purposes, and standardized, serialized, universal species is also very high. So it has been the national standard of a class of fasteners known as the standard fasteners, or referred to as standard parts. Fasteners are the most widely used mechanical foundation. With China's accession to WTO in 2001 and entered the ranks of international trade power. China's fastener products exported to the world a large number of countries in the world of fastener products have been the influx of the Chinese market. Fasteners as one of the larger import and export of products to achieve international standards, to promote China's fastener enterprises to the world and promote the full participation of fastener enterprises in international cooperation and competition, have an important practical significance and Strategic significance. Due to the specifications, dimensions, tolerances, weight, performance, surface conditions, marking methods, and specific requirements for acceptance inspection, marking and packaging of each specific fastener product.