... , milk sugar, cheese, and lactic acid, etc.·MiningCoal, potash, saline, phosphate, calcium compound, etc.·Oil refiningLubricating oil, aromatics, fuel oil, and ... instant coffee, etc.·Chemical industry Caustic soda, acid, urea, sodium chloride, sodium hydroxide, etc.·Petrochemical Natural gas, coal gas, lubricating oil, and ...