UL qhov rooj hluav taws yog hais txog Asmeskas tus qauv hluav taws qhov rooj, uas yog siv nyob rau hauv North America thiab lwm lub teb chaws thiab cheeb tsam uas lees paub UL cov qauv. Sib txawv ntawm lwm lub qhov rooj hluav taws, qhov pom tseeb ntawm American Standard qhov rooj hluav taws yog tias American Standard qhov rooj hluav taws yuav tsum tau kuaj los ntawm hluav taws kub rauj. Txais tos kom sab laj peb.