Spst Relay

Yog tias koj tab tom nrhiav kom tau lag luam zoo los ntawm cov khoom siv txav ntawm kev lag luam, txais tos kom yuav qhov kev hloov valve ntawm tus nqi zoo ntawm no. Paub hais tias yog ib qho kev lag luam uas muaj kev lag luam thiab cov neeg muag khoom nyob hauv Suav teb, peb lub koomhaum tseem muaj cov qauv dawb rau kev kuaj xyuas.