Dab tsi yog cov ntsiab lus tseem ceeb ntawm kev saib xyuas txhua hnub ntawm cobalt cov kab mob hniav

1. Anti-cuam tshuam:Zam kev cuam tshuam sab nraud, thiab nrhiav kev kho mob sai sai tom qab cuam tshuam.
2. Kev tshuaj txhuam hniav:Siv tshuaj txhuam hniav kom tsis txhob muaj kev txaj muag.
3. Kev kuaj xyuas tsis tu ncua:Kev kuaj xyuas qhov ncauj tsis tu ncua kom ntseeg tau kev nojental.