Hongshi Construction Materials Ltd focuses on exploring and using fine natural stones home and abroad.The products include sandstones from Yunnan,Sichuan,Australia and India, and rare marbles in China. Natural sandstone which made after billions of years are non-polluted to the enviornment,moreover, they contain lots of characteristics such as non-radiation,opacity,weather resistance,decalescence,heat insulation,anti-skid and so on.Colors of them are pleasing,and lines of them are various.some strong and some soft.Results of using sandstones as decorative materials are rich and stereovision.