In June 2014, in order to meet China's growing construction market and the demand of plastering gypsum and gypsum based interior wall putty, Saint-Gobain group invested 100 million yuan, in Saint-Gobain gypsum (Changzhou) co., ltd., a new automatic, leading technology, stable quality of gypsum powder production line, annual output of 180000 tons of various high quality building gypsum powder