... no fluming, no dropping, no poisonous gases in production process.2. used for production of mineral salts like aluminium fluoride, cryolite, almunum ... .3. widely used as mordant in dye/painting industry for its strong adsorption capacity coloring matter4. used in glass ... treatment agent, catalyst and catalyst carrier etc6. used in production of waterproof fabric, printing ink, paper filler, wires and ...