China's chain drive industry (including the iron chain and sprocket industry) 50 years since the initial development of the 20th century, after the hard work of over half a century, has now entered the world industrial chain (hereinafter referred to as "chain"), the ranks of producing countries. In particular the 21st century, with national sustainable development strategies and effective implementation of China's accession to the World Trade Organization show the positive effects of the past four years, the Chinese chain drive industry continued to show "full, rapid and steady" development of new trend, particularly in chain drive products and the level of manufacturing technology has made great progress, "gold content" continues to improve. According to incomplete statistics, in 2004 more than 400 nationwide chain drive manufacturers to complete a total industrial output value of 4.3 billion. China chain industry, the main economic indicators of double-digit growth. Is expected in late 2005, the industry will be completed 3.88 billion yuan of industrial output value, sales income 3.8 billion to complete the export volume will reach 2.4 billion U.S. dollars.

    "Speed, efficiency, structural" characteristics of beginning to achieve unity in recent years, our swing chain drive new product development shows "put up, speed becoming faster, more variety, grade up" a new pattern, beginning to achieve the "three high and one excellent" (high technology, high added value, quality, high grade, superior product performance) of new features. With high accuracy, high strength, high resistance can be *, high-speed transmission, wear, corrosion resistance as the main feature of some new products have been developed, mass production, selling domestic and international markets. Such as variable pitch (hy-vo) silent chain, automotive chain and low noise engine with a chain and other supporting products to be recognized as OEMs.