1, Koom nrog PVC cov khoom siv kev nyab xeeb, yeej tsis muaj tshuaj lom, muag muag thiab xis nyob2, Steady 2.1A ceev them, kev nyab xeeb thiab ua haujlwm siab rau txawb thiab ntsiav tshuaj3, koom nrog 100% tooj liab tub ntxhais, txoj hlua zoo thiab kev sib kis muaj nuj nqi, ntau ruaj khov kom them.4, Ib qho qauv tsim tshuab, tsis muaj kev tawg, khov kho thiab ruaj khov.5, Cov txheej txheem ntau lawm, tus nqi zoo.