lm төмрийн хүдэр боловсруулах босоо нунтаглах тээрэм
Bentonite боловсруулах тээрэм. Bentonite Wikipedia. Bentonite (/ ˈ b ɛ n t ə n ʌ ɪ t /) is an absorbent aluminium phyllosilicate clay consisting mostly of montmorillonite was named by Wilbur C. Knight in 1898 after the Cretaceous Benton Shale near Rock River, Wyoming..
