Changsha Yangming Building Materials Co.Ltd, located in the development park of the small and medium enterprises in Changsha city, Hunan province, China, is a newly joint-stock enterprise specializing in researching and producing mortar admixture(mortar king, wall painting king, lime king, rock sand crystal), concrete additives(efficient water-reducer, pump agent, retardation water-reducer), and environmental wall paint. The company covers more than 10 acres which has eight million RMB fixed assets, an annual productivity of 20 thousand tons and 288 employees, of whom 78 are senior technical personnels and managerial talents. We are looking forward to your cooperation.