A large amount of energy is consumed in a factory. 　It is important matter for us to choose proper energy which is suited to our needs in various situations.
	Energy conservation is a matter of utmost concern for industrial circles which consume a large amount of energy. The working circumstances in factory is also a matter of consideration. In that regard, it is city gas that is suitable to each situation. 　 If you see a Day of the City Gas Boiler Man, you will understand the reason.

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