Mafiriji a mbale amagwiritsidwa ntchito kwambiri kuzizira zinthu zooneka ngati njerwa mu nkhungu kapena bokosi. M'mafiriji a mbale, refrigerant imaloledwa kuyendayenda mkati mwa njira zoonda mkati mwa mbale. The mmatumba katundu ndi frmly mbamuikha pakati mbale. Kuchuluka kwa kutentha kumatha kupezeka pakati pa zinthu zomwe zapakidwa ndi mbale zomwe zimatuluka nthunzi. Ndife onyadira kukhala wolemba wa China National Standard of Plate Freezer (GB /T22734-2008).