Refrigeration and heat preservation carriages for transportation: The inside and outside of the refrigerator cars of our company are flat boards with 0.8~3mm roast paint, and heat insulation PU materials are infused by high pressure between the boards, which has a froth density of 45kg/m2 and can prevent cold conduction. The total thickness of is about 50mm so that it can prevent the outside temperatures beyond 10 degrees. The outside corners are wrapped up with stainless steel to take on a beautiful appearance. White roast paint PU heat insulation boards and stainless frames are applied both inside and outside so that the carriage is lighter, more durable, and has a better closing effect than a common trunk carriage. The fresh color is also very convenient for advertising in the outside. The insulation effect is very well and It is very comfortable in the carriage, just like the feeling in an office. The head part can be reconstructed with an air conditioner for vendition, refrigeration and other uses. It has a wide variety of uses: cold and heat preservation for transportation of fish, meat, vegetables, drinks, ice goods, dining cars and foods etc. It can also be used as container house, vendition house, trail car and camper etc. It is very suitable for logistics residence mixing, factories and companies. The windows are fixed with great fastness and no trembling would occur so they can be opened according to different needs. In a word, this product is very convenient with a low price.