The second: "smell" Analysis of the quality of mud here, "smell" is not smell the smell, the smell after the cement is unsafe for consumers, where the "news" is "listening" to listen to business reports ingredients on cement, thus to concluded that the quality of the cement. Some small domestic cement For low-cost sales, in violation of the provisions of the cement standard white cement, excessive use of cement mixed material is not in strict accordance with national standards for cement density ratio of raw materials, its performance can be imagined. The regular cement manufacturers in the choice of raw materials is very strict on the cement plant to produce cement with a moderate setting time, high bond strength, durability and good. In 1756, the British engineer J. Smeaton study some lime in the water hardening characteristics found: For hydraulic lime, must be used to burn limestone containing clay; masonry mortar for underwater construction, most ideal ingredient is formulated by the hydraulic lime and volcanic ash. This important discovery for the modern research and development of cement laid a theoretical foundation. Cement tanker, cement Wuhan (certified), caidian cement provided by the Hongshan District of Wuhan pavilion cement operation. Hongshan District of Wuhan pavilion cement business unit (www.whltsn.com) (www.hbltsn.com) was Wuhan, cement and products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Wuhan cement leadership with the staff warmly welcome all inquiries negotiations to create a better future Wuhan cement.