1,Yogwiritsidwa ntchito ndi zinthu zotetezera za PVC,zopanda poizoni,zofewa komanso zomasuka pakukhudza2,Yokhazikika 2.1A yochaja mwachangu, chitetezo komanso magwiridwe antchito apamwamba pafoni ndi piritsi3, yogwira ntchito ndi 100% copper core, chingwe chabwino komanso ntchito yabwino yotumizira, yokhazikika pakuchaja.4, Ukadaulo umodzi wopanga chitsanzo, palibe kusweka, wokhazikika komanso wolimba.5, Muyezo wapamwamba kwambiri wopanga, mtengo wake ndi wabwino kwambiri.