Usage: I- Drilling: The conventional use of Bentonite is as a mud constituent for oil and water well drilling. Its roles are mainly to seal the borehole walls, to remove drill cuttings and to lubricate the cutting head. II- Foundry: Bentonite is used as a bonding material in the preparation of molding sand for the production of iron, steel and non-ferrous casting. The unique properties of Bentonite yield green sand moulds with good flowability, compactability and thermal stability for the production of high quality castings. III- And pelletizing, construction and civil engineering, environmental markets, agriculture,etc. 25KG/50Lb net Multi-wall paper bag.