Ntxiv rau qhov kev faib ua pov thawj tawg, LED tawg-pov thawj teeb kuj tau muab qhab nia rau lawv cov peev xwm tiv thaiv corrosion. Cov ntaub ntawv pov thawj tawg feem ntau poob rau hauv ob pawg: IIB and IIC. Feem ntau ntawm LED teeb ua tau raws li tus qauv IIC nruj dua.
Hais txog kev tiv thaiv corrosion, cov kev ntsuam xyuas yog bifurcated rau hauv ob theem rau sab hauv ib puag ncig thiab peb theem rau sab nraum zoov chaw. Sab hauv tsev tiv thaiv corrosion qib suav nrog F1 rau nruab nrab thiab F2 rau kev ua haujlwm siab. Rau sab nraum zoov tej yam kev mob, Cov kev faib tawm yog W rau lub teeb corrosion kuj, WF1 rau nruab nrab, thiab WF2 rau siab corrosion kuj.
Qhov kev qhia ntxaws ntxaws no ua kom ntseeg tau tias cov teeb pom kev zoo yog haum rau ib puag ncig tshwj xeeb, txhim kho ob qho tib si kev nyab xeeb thiab lub neej ntev.