1)whiteness 90% above, intensity 2.7mp above, 2)fineness of 120 mesh, 3)initial setting 7minutes, final setting 15minutes gypsum powder :Whiteness is 90% above,the intensity is 2.7mp above,fineness of 120 mesh,marked thick 75%,Initial setting 7 minutes, Final setting for 15 minutes. Gypsum Powder