何謂免治馬桶

http://famiclean.pixnet.net/blog/post/67456309-%E9%98%B2%E7%97%94%E5%88%A9%E5%99%A8%EF%BC%81%E5%8E%9F%E4%BE%86%E5%85%8D%E6%B2%BB%E9%A6%AC%E6%A1%B6%E6%98%AF%E9%80%99%E6%A8%A3%E4%BE%86%E7%9A%84%EF%BC%9F%EF%BC%9F