Fasteners commonly known as screw nuts, is a mechanical basic parts, known as the 'industry of rice', large to the space shuttle, automotive and mechanical equipment, small to table and chair benches, all have their presence. The industry is a strategic industry that is labor-intensive, capital-intensive, and high-tech. All countries in the world attach great importance to its development. After years of development, China has developed into the world's largest fastener producer. It is reported that at present, there are nearly 10,000 fastener production and trading companies in China and more than 1 million employees are employed, which contributes a lot to employment. Domestic carbon steel fasteners are mainly used in the automotive industry, electronic products, electronic equipment, machinery and equipment, construction and general industrial applications. From the point of view of the country's production areas, the fastener industry in Wenzhou, Yongnian and Haiyan is also the most developed and the most distinctive.

Fastener City, Hebei Yongnian Profile: Yongnian, after more than 30 years of development, has more than 2,300 production companies, gradually formed an industrial cluster and a huge market network. At present, 87 enterprises in the county have passed the ISO:2000 international quality system certification. Last year, the investment in equipment was over 200 million yuan, the annual output of fasteners was 2.47 million tons, and the sales amount was 17.3 billion yuan. Production and sales accounted for 40 of the national market share. %. Recently, a high-strength fastener base project with a total investment of 400 million yuan in China-Germany high-end fasteners, 380 million Chinese screw world, and a total investment of 10.7 billion yuan has been introduced. The project ended the history of long-term dependence on imports of high-end products in this field in China.

Advantages: Sales account for nearly half of the country's share, creating a good regional advantage. In addition, the local government has relatively more supportive policies for the fastener industry each year.

Disadvantages: In such a large-scale industrial scale, the industrial structure lacks the leading position and the product competitiveness is not strong. In addition, there is a lack of alliances between enterprises, and there is no 'speaking right' in determining the prices of raw material purchases and product sales.

There are more than 700 standard fastener manufacturers in Haiyan, Haiyan County, Zhejiang Province. There are more than 100 companies on the regulations, mainly producing universal standard fasteners, screw nuts, screws, and high-strength long rod bolts. About 14,000 kinds of products. In 2006, the output of standard fasteners in the county exceeded 1 million tons, accounting for about 22% of the county's total economic output and sales revenue of 4 billion yuan. Among them, 70% were exported, and nearly 200 million U.S. dollars were self-exported, of which nut exports accounted for 50% of Zhejiang Province, and long screw production and export volume ranked first in the country.

Advantages: Leading companies gather, and the domestic fastener giant Jinyi Industry is located in Haiyan, Zhejiang. Leading companies often play a leading role. Can promote the rapid development of small and medium fastener enterprises. In addition, the public service platform related to the fastener industry is relatively complete. The national fastener professional market, the national fastener testing center, and the fastener surface treatment center have formed a supply of raw materials, product production, and equipment. Manufacturing and other relatively complete industrial chain.

Disadvantages: Quality inspection reports from various parts of the country show that sea salt fastener companies have been exposed to problems such as unqualified quality. In addition, most companies’ orders depend on foreign trade and the market structure is too single. If overseas economic conditions are not good, Haiyan Fastener Industry Base is also the most affected.

Wenzhou Fastener Industry Wenzhou Fastener Industry started in the 1970s and experienced nearly 30 years of development. There are more than 3,000 fasteners and upstream and downstream related companies in Wenzhou, and a considerable number of companies still use family workshops as their parent stores. In addition, about 10,000 business households are located throughout the country and have developed rapidly in recent years. Among them, there are more than 200 enterprises in the upper scale and higher grades, with an annual output of more than 1 million tons, and an annual production value of approximately 100. 100 million yuan, accounting for about 30% of the country's market share.

Disadvantages: In recent years, the land price in Wenzhou has skyrocketed. For companies such as the fastener industry that are heavily polluting and have high energy consumption, the government's attention and support are relatively weak. Many fastener companies have been forced to relocate. The number of fastener enterprises in Wenzhou Also relatively declining.

Advantages: The Wenzhou fastener industry started early in the three major industrial bases, accumulated for many years, coupled with a series of difficulties encountered in recent years, so that the fastener companies in Wenzhou realize the importance of brand and image in recent years. To come, Wenzhou fastener enterprises have always maintained a good situation in their external image.

Conclusion: Looking at the three fastener industry bases, they have different advantages and disadvantages. It is precisely because of the unique fastener industry in the three cities that created the current tripartite pattern of fastener industry in China.