Recently, Renault launched a new technology optitrack, adding a hydraulic motor mechanism to the front wheel of the truck to provide additional traction for the front wheels in harsh road conditions. It is currently used on Renault's C Series trucks in the 8x4 and 8x2*6 models. . The optitrack uses hydraulic motors to provide the driving force for the front wheels of the vehicle under extreme conditions to enhance the driving performance of the vehicle. On the 8x4 models of Renault C-Series trucks, only the models equipped with DTI 11-liter and DTI 13-liter engines are equipped with optitrack technology. In the 8x2*6 model, only the model equipped with the DTI 11-liter engine is equipped with optitrack technology. The optitrack technology can be applied in 4x2, 6x4, 6x2*4, 8x2*6 and 8x4 models, but for now, the 10x4 models are more popular. Air condition ventilation equipment hisense , https://www.hisensegroups.com