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