Shanghai Yongshi Technology C0;, Ltd. is a main manufacturer and exporter of ' multi-purpose, multi-use portable refrigerator/freezer in China. This kind of product have competitive price and high quality. It is durability, efficiency and fast cooling. Available in dual voltage models so you can take the refrigerator/freezer from a vehicle running on 12/24 volt DC to an indoor 100 ??240V 50Hz and 60Hz volt AC power source for maximum convenience and flexibility of use. Also 12V DC, 24 volt and ...