Guangzhou Naian Auto part Co., Ltd, located in Guangzhou, Guangdong, China. It adheres to &＃039;&＃039;quality first, customers suprem&＃039;&＃039; principle since the foundation. And it is the manufacturer of chassis parts for semi-trailer, trailer, and heavy duty truck. With advanced equipments and strict quality control system, Naian has achieved ISO9001 and TS16949 international quality systems. The reliable quality and efficient technical support make its products popular and reputable overseas. Main products: Leaf Spring for Different Vehicles With more than 10 advanced production lines, we are one of the largest manufacturers of leaf spring in China. We have varied and advanced equipments for producing and testing, which make us the experienced and full ranged----conventional leaf spring, parabolic leaf spring, Z-type leaf spring producer, with annual output over 150, 000 metric tons. Technically, the thickness can be 6-60mm, and material is sup6, sup7, sup9, sup9A, sup10, sup11, sup11A. U Bolt and Tire Bolt Tire bolt and u bolt are made from high-strength alloy steel, and produced by progressive equipments, through strict quality controlled production process. Customized are welcomed and accepted. 3.TUBE WHEEL and TUBELESS WHEEL, wheel rim for other truck or trailer. 4.Axle and Mechanic Suspension for Truck and semi-trailer Full series of American Axle and German Axle, single-point suspension, American suspension, German suspension and York suspension. 5.Landing Gear for Semi-Trailer Landing gear with inner type and outside type. Lifting capacity reaches 25-35tons. Each kind landing gear is different in lifting height and foot shapes. Customers&＃039; different needs can be met exactly. 6.Fifth Wheel and Kingpin Fifth wheel and kingpin with 2&＃039; (#50) size and 3.5&＃039;(#90) size. Fifth wheel in forged or casted type. Kingpin are forged, alloy steel material. 7.Air Bag and Rubber Products More than 20 kinds of air bag and vehicle seat and air suspension are supplied for your choice. Besides varied oil seals, rubber bushes and other rubber and plastic products are provided. To sum up, in order to satisfy different requirements of customers, and provide superior and fast service, Naian will constantly devote to improving the products quality and reducing production cost. To make you satisfied is our pursuit. Naian&＃039;s high-quality products, warm and considerable service will bring you satisfaction.