△蹲便器自身带存水弯的,下方排水管不需安装存水弯
△坐便器自身带存水弯的,下方排水管不需安装存水弯
△小便器自身带存水弯的,下方排水管不需安装存水弯
△洗脸盆自身不带存水弯的,下方排水管需安装存水弯
△蹲便器自身带存水弯的,下方排水管不需安装存水弯
△坐便器自身带存水弯的,下方排水管不需安装存水弯
△小便器自身带存水弯的,下方排水管不需安装存水弯
△洗脸盆自身不带存水弯的,下方排水管需安装存水弯
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