Delong cab body insulation measures. Low frequency sound insulation panel stiffness and damping properties of materials related to China's heavy truck cab, IF acoustic performance followed mass law, the greater the surface density, the greater the amount of noise, and therefore meet the requirements under the control of body weight, an appropriate increase in the door window glass thickness, optimizing allocation of key locations body panels (floor, cowl-based) can effectively improve overall body thickness insulation performance. The main role of the carpet is to isolate the incoming noise floor, the choice of materials is more variety, there are blankets composite film + PV, PV film + foam, carbon fiber composite materials + cotton blankets. Test proved China National Heavy Duty Truck cab, improving lower areal density cotton blankets or mats can effectively isolate the floor apertures incoming Delong cab HMI design plays an important role in automotive active safety, making each countries have invested a lot of manpower and material resources to research it. Heavy truck cab where the study, the United States, Japan and Europe in terms of automotive human machine interface design at the forefront of the world. In Japan, human-computer interface research work has been carried out for a long time, the study also quite comprehensive, the research fields of medicine, physiology, psychology, and other disciplines, Shandong heavy truck cab, and the man-machine interface to fully research and combines these disciplines up to study from various angles. Human-computer interface research focused primarily on the United States to obtain information on how fast the vehicle when driving, so they pay great attention to the driver's dashboard legibility of information, as well as causing the steering wheel to the driver as shown with respect to the dashboard vision disorders. Human-computer interface research in Europe is even more direct. Its research focuses on when the vehicle is stationary, the driver in the normal driving position because the body structure factors vision control disorders. Their purpose is to direct the design, production and services. CNHTC Jinan cab _ Yao Xiang (certified) _ heavy truck cab provided by Jinan Yiu Cheung Trading Company. Jinan Yiu Cheung Trading Company (www.jinanyaoxiang.com) Shandong Jinan, engine assembly leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Jinan Yiu Cheung leadership with the staff warmly welcome all inquiries negotiations to create Jinan Yiu Cheung a better future.