With the vigorous development of the transportation industry, the status of refrigerated trucks has also been higher. In order to ensure the preservation and freezing of foods, refrigerated trucks have become an indispensable means of transport. How much do you know about it for a refrigerated truck? Let's take a look. The development stage of a refrigerated truck can be divided into three phases. When the first stage was started, the refrigerated car was an integral structure that was infused with a foamed metal skin. This process was consistently adopted by all refrigerated truck companies at the time. Of course, products made using this process are also not perfect. Many products have a large number of cold bridges due to the presence of a large amount of metal materials on the car body, and there are defects in the injected foam insulation that are not easy to find. This results in an ineffective quality assurance of the inherent quality, because the foamed material has an insulating effect, but it can also be used as a binder, which can result in a poor adhesion, resulting in a poor insulation effect. With continued development, the second phase of technology is significantly better than the previous one. The entire second refrigerated vehicle is a structure in which foamed glass steel is injected, and this structure greatly improves the previous problem. This design structure is not only used in this time, it will be used in the future third-generation refrigerated truck manufacturing companies, showing the superiority of this technology. Although this product has progressed a lot on the basis of the first stage product and greatly improved the heat preservation effect, there are still defects that the adhesion is not strong. The third stage is the use of a fully enclosed polyurethane plate bonded glass steel structure. This is also a perfect one in all designs. At the same time, this technology is used in the production of the next two generations of refrigerated trucks. Low weight and low heat loss is its advantage, good insulation effect is its big feature. The binder uses unsaturated polyester resin, plus a cushion, and rigid polyurethane foam is used as a heat-insulating material, successfully creating the concept of low thermal conductivity and high strength. Of course, there are many materials that use high-end, they jointly improve the refrigerated truck. The big drawback here is that the polyurethane has a large loss after cutting, and the material cost is relatively high. The above is the history of the development of refrigerated trucks. Everyone has already had a deep understanding of it. Qingdao Yakai Automobile Industry & Trade Co., Ltd. mainly produces and sells: refrigerator cars, insulated cars, special vehicles for dead and dead animals, harmless treatment vehicles, chickens, mobile sale vehicles, postal vehicles, wing drives, and flatbed trailers. Contact: Gao Xiaohui Contact phone (WeChat same number) QQ official website: Spoiler Light,Civic Spoiler Light,Honda Civic Spoiler Brake Light,Honda Civic Spoiler Light Danyang Weisheng Automotive Technology Co., Ltd , https://www.wizsinparts.com