Zigong, Southern regional center of the city, south of the central city of Chengdu-Chongqing Economic Zone, enjoy the "Millennium salt," "dinosaur town", "southern lights city", "food of the House" reputation. Management artesian wells, Gongjing, Daan, four districts along the beach and Rongxian, Fushun County, Sichuan Province jurisdiction-level city, Zigong build the Eastern District (Zigong High-tech Industrial Development Zone) in 1990, is available in Sichuan one of the four state-level high-tech zones. Zigong, one of the earliest establishment of the Republic of China twenty-three city, the history of Zigong Salt and wealthy businessmen gathered in production due to one of the most prosperous cities in China, but also in the National Anti-Japanese cities with the highest amount of donations. Zigong is the world's first development and utilization of natural gas in place, one of the earliest Sichuan provincial cities and industrial city. ROC period, Zigong, Sichuan is one of the most economically developed and most densely populated areas. In 2013 China city competitiveness rankings, "city rankings of listed companies under the Perspective", the Zigong municipal administrative regions ranked in the top ten before the growing competitiveness of the first one. Zigong, China's quality grain and pig production base; has a number of well-known enterprises and Chenguang Research Institute of China, carbon black Industry Research Institute, Institute of mineral salt and other national research institutes. Zigong is a national historical and cultural city, China Excellent Tourism City, National Garden City, an open city, the State Intellectual Property pilot cities, the National Health City, China "City of Literature" hundred cities and scenic spots in Sichuan provincial environment beautiful demonstration city. River gravel crusher its most typical use is it to adapt to the current artificial sand industry, is the rod mill crusher, impact crusher, cone crusher, sand making straight-through alternative. River gravel crusher has the following characteristics: small size gravel discharge, grain type uniform, large capacity, long life hammer, small matching power, variable three broken for secondary crushing, process simplification, simple structure, easy maintenance , smooth operation. Equipment investment is lower than the same size of the traditional technique and equipment 35% -50% higher than the same scale output efficiency of traditional technique and equipment 35% -50%, with limestone as an example: a product size ≤5mm accounted for more than 85%. Run maintenance costs lower than the same size of the traditional technique and equipment 35% -50%, widely used mechanism for aggregate, cement, refractories, metallurgy, chemical and other industries. Applications river pebbles, rocks (limestone, granite, basalt, diabase, andesite, etc.), ore tailings, the artificial sand making stone chips. Construction aggregate, highway road fabric, cushion material, asphalt concrete and cement concrete aggregate production. Water conservancy and hydropower engineering, highway, highway, railway, passenger line, bridges, airport runways, municipal engineering, high-rise buildings and stone shaping mechanism of sand production. Mining industry front crushing grinding process, building materials, metallurgy, chemical, mining, refractories, cement, abrasive material crushing and other industries. High abrasion and secondary crushing disintegration, thermal power, in addition to sulfur metallurgical industry, steel slag, construction waste crushing and other environmental projects. Glass, quartz sand and other high purity materials. http://www.mdzhishaji.com/ http://www.zzmdks.com/ http://www.mdssx.com