要

来源: 于 2014-05-06 13:00:17 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次
请问这是什么？
--> Make your Air-Con life longer

谁来买单？
--> Usually Tenants, but depend on your contract

费用大概多少？
--> around 30$ per unit

是不是common practice?
--> Yes