Foreign cement grinding aid products, most of the manufacturers also a few models, the technology is relatively mature, and its formulations are also basically fixed, do not need to change the formula often in order to adapt to changes in cement and seasons, as the concrete admixture products It is a single or composite product such as amines(Diethanolisopropanolamine,Triethanolamine,Triisopropanolamine),polyols, and acetates.