PVC hluav taws xob npauj npaim li qub yog lub teeb hauv qhov hnyav thiab muaj zog corrosion kuj. Lawv siv nyob rau hauv ntau qhov chaw, xws li cov dej ntshiab thiab cov kav dej haus, cov kav dej thiab cov kav dej phwj tuaj, cov dej ntsev thiab cov kav dej hiav txwv, cov kua qaub-puag thiab cov tshuaj siv tshuaj. Hauv ntau lwm qhov kev lag luam, qhov zoo tau lees paub los ntawm cov neeg siv feem ntau.
Electric UPVC Npauj Npaim Valve
