What is 20T Sinotruck 8×4 refrigerator truck? Refrigerator truck aka refrigerated truck/reefer/freezer/cooler box van, is a closed-boxed transport vehicle used for transporting frozen or fresh goods, it is equipped with a refrigeration unit and insulated box.Our refrigerated trucks adopt polyurethane material for the insulation layer, and the box body is assembled by a segmented "sandwich" plate bonding method, which leads to high heat preservation performance. Refrigeration units can choose from Thermo King, Carrier and Chinese brands.