... h/24hfreezing mediumR600aOne in fourRefrigeration, partial freezing, freezing, frozen, a machine with for, non- polar transformation, because of the need and ... sealOverall outside the box, the overall container port, seamless interior, ultra thick insulation layer of the whole hole.Multi air bag ... , full seal, reducing cooling capacity loss, energy saving. SINGLE TEMPERATURE DEEP FREEZE CHEST FREEZE