å½å交éç 水管çã»å½åä¿å ¨å± é²ç½èª²ããã100-8918 æ±äº¬é½å代ç°åºéãé¢2-1-3ãã(代表é»è©±) 03-5253-8111 å½åå°çé¢ å¿ç¨å°çé¨ å°çæ å ±å¦ç課ããã305-0811 è¨åçã¤ãã°å¸åé·1çªãããã(代表é»è©±) 029-864-1111 Copyright (C) Ministry of Land, Infrastructure, Transport and Tourism of Japan.
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