For Delong cab side panels, rear enclosed double wall structure, can be filled with fiberglass, felt, foam Jinan heavy truck cab assembly in its cavity to increase the insulation effect. Sound waves in the penetration process, the reflection at the interface of several different media, the porous material portion is absorbed acoustic energy, noise can play an effective role. Body sealing performance can be tested by ultrasonic leak detector Shandong heavy truck cab, after the ultrasonic generator is turned into an open area at the center of the cab, heavy truck cab windows closed doors, outside the cab doors and windows using ultrasonic scanning receiver seal, front wall and the bottom hole joints, in order to find out more serious leak area. According to the test results, the bad check car doors seal sealing system design is reasonable, the sealing strip assembly is biased, to harness via joystick pieces should be strengthened through the hole using a sealing material, in addition to also ensure Sheet Metal assembly, welding precision parts to meet the requirements, the use of rubber seal coating should be in place. According to the quality of after-sales department and feedback, Delong car off the assembly line in the debugging process and the user process, often Delong cab Erdao seal off, the survey Delong cab Erdao seal assembly yields can reach 89 percent, seriously affecting the quality and appearance of the vehicle door sealing China's heavy truck cab, this problem is serious impact on the product's brand image car "after strip torn off by hand at the door seal affixed cab door, then hand pressed several times "due to the lack of on-site assembly production of special tools, forced up when the operator can not even manually, assembled after Delong can not completely seal the cab and frame sticking firmly, after driving the vehicle off the assembly line Delong Room Erdao seal paste insecure due to the emergence of shedding "section Delong car delivered to users that occur during the second seal off road, seriously affect the appearance of driving quality. Delong cab dual-sealed front and back pieces developed using special tooling, Germany Cab Long Pass Yield Comparison: As is evident from Plato after Delong seal using special tooling obvious effect, shedding problem has been significantly controlled, and Delong Erdao seal assembly passing rate of 89% up to 98.5 %. " Heavy truck cab exterior parts, Jinan Yiu Cheung (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.