Under normal circumstances, that by the early preparation of the added dimension of old cement block maker Wuhan trace colorant is harmless to humans, one is a very small amount, and second, there are strict dosage scale cement tile Wuhan, the third is in the coloring It has a strict control on raw material agent. But now a lot of mud pot providers and suppliers in order to reduce the cost of cement plant in Wuhan, and in colors and fancy fuss, using the colorant matter from quality still have severe dose than earlier safety standards, so the body will produce greater harm. Therefore new players get started in the election when the pot as much as possible to tie purple clay or mud line segment based on other colors or clay-based pot, to play as little as possible, until there is a certain familiarity to purple and then begin diverse Choose. Between the latter and the clay silica and alumina and iron ore solid phase reaction of compounds, their existing form, there are four, namely tricalcium silicate (3CaO · SiO2, abbreviated C3S), dicalcium (2CaO · SiO2, abbreviated C2S), tricalcium aluminate (3CaO · AI2O3, abbreviated C2A) and Fe-Al tetra calcium (4CaO · Al2O3 · Fe2O3, abbreviated C4AF). There are a small number of uncombined calcium oxide and periclase (MgO). Wuhan white cement, cement gazebo (certified), 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. Cement leader in the pavilion with the staff warmly welcome all inquiries negotiations to create a better future for cement pergola.