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省エネ大賞受賞技術開発の軌跡 (14)

第1章  もったいない無駄と必要な無駄

1.3 水栓哲学 VS 水道哲学


Trajectory of Energy Conservation Grand Prize-winning Technology Development (14)

Chapter 1 Wasteful Waste and Necessary Waste

1.3 Faucet philosophy VS Water supply philosophy