With the in-depth implementation of the "Go West" strategy, economic development strategy with the construction of the Silk Road and the Yangtze River economic belt, the 2013 full-year total of the western regional GDP 12.60028 trillion yuan, an increase of 10.72 over the previous year, the growth rate in a row seven years in the country to stay ahead; the country's total GDP reached a key pillar 20. Western industries include auto, equipment manufacturing, military manufacturing, software industry, petrochemicals, industrial materials, electronic information, aerospace industry. Development of the Western demand for manufacturing various types of fasteners products plus exuberant Yu, the western region has become increasingly important Chinese fastener industry market. Chongqing is China's second largest automobile production base, the country's major engine and instruments of production base, the largest motorcycle production base, the largest equipment manufacturing base, but also to develop the laptop industry, aviation industry (helicopter manufacturing), rail transportation, robotics industry, precision CNC machine tools and other high-end industrial manufacturing.