Cov qauv sulfur rau carburizing cov neeg ua haujlwm
Ntawm tus qauv sulfur ntawm carburant, leej faj cov ntsiab lus ntawm carburant nyob rau hauv ib tug dav kev txiav txim siab yuav muab faib mus rau hauv siab sulfur, nruab nrab sulfur, tsis tshua muaj sulfur, ultra-low sulfur.High sulfur feem ntau yog hais txog cov ntsiab lus sulfur siab tshaj 2.0% Cov sulfur nruab nrab feem ntau yog hais txog cov ntsiab lus sulfur ntawm 1.0% - 2.0% L ...