In US, you have two options: 1. circulator; 2. instant heater


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送交者: Smashedmouth 于 2005-5-19, 18:58:12:

回答: about 一打开热水龙头就有热水 由 silxirt 于 2005-5-19, 16:35:44:

attached to the faucets.

When you build your house, your builder will give you these choices.


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