Iiyunithi zefriji zeBlackSheilds VcoolingShields ziyilwe njengezisombululo zolawulo lwemozulu kulungiselelo lwekhonkco elibandayo. Iiyunithi zifakwe ngokukhuselekileyo kwaye zithembeke kwiinqwelo zokuthutha i-Heavy / medium / light refrigeration kunye neempawu zomgangatho ophezulu, ukuthembeka okuphezulu, ubungakanani obuncinci, ukupholisa ngokukhawuleza njl.