... clay for oil refinery with high gradeThe activated clay is a type of sub-white power,which is odorless,tasteless,and non ... is easy to absorb moisture when exposed to air.H.S. CODE:380290001,Specification:(Testing method:according to GB25571-2011) Colorwhite ... on,it is becoming more and more significant for the development of the whole world.4,Contact information:Nanning Wuming Guirun Chemical Co.,Ltd ...