Highway construction in China has developed rapidly, as the basic raw material of gravel in highway construction has also been considerable development and improvement. Building a modern stone field, production of high quality gravel has become a consensus. However, the highway has been opened to traffic problems in perspective, gravel production still has many problems, such as gravel and coarse particle size generally, and mixture segregation serious, stone flakes in the excessive amount of needles, mixed feed unstable gradation change frequently which seriously affected the quality of road construction. At present, China has not really set up a factory and market-based gravel production market. Most highway construction enterprises have not set up their own field of modern materials and the purchase comes from multiple channels, so there are many problems in stone sources, product specifications, equipment performance and inspection criteria. Project proved that it is now imminent problem to build up modern quarries, to improve stone processing methods and to ensure stability of supply of quality stone.

Highway construction makes more stringent quality requirements for stone. The quality of stone including two aspects: First, characteristics of the gravel resources in the mechanical strength, durability, chemical stability, surface characteristics and the existence of impurities such as poor; second, processing characteristics, including particle size and size distribution, particle shape, particle size consistency, cleanliness and 0.075mm particle content. Shanghai Jianye to meet the market demand-oriented, with long-term development over the years, the company achieved strong data to prove and Shanghai Construction Metallurgical products used at home and abroad for more than 70% coverage and sales area covers China, Southeast Asia, Europe, Africa other countries and regions. Shanghai Jianye has become the leader of mining company in the field. Our main products include crushers, sand making machine, mobile crushing, milling machines and other 10 kinds of series, several dozen kinds of specifications of the crushing milling equipment, widely used in mining , building materials, roads, bridges, coal, chemical industry, metallurgy and other industries. The company regards product quality as enterprise life. Products have passed ISO9001: 2000 international quality system certification.