Tooj liab npib alloy constantan hlau, uas muajTsawg hluav taws xob resisitance tsawg, Zoo cua sov-resistant thiab corrosion-resistant, yooj yim rau kev ua tiav thiab coj welded. Nws yog siv los ua cov khoom tseem ceeb hauv lub thermal sib tshooj relay, tsis tshua muaj cua sov circuit breaker breaker, thiab cov khoom siv hluav taws xob. Nws tseem yog ib qho khoom tseem ceeb rau hluav taws xob cua sov cable. Nws zoo sib xws li 's hom cuponickel.