D-One Vehicle Group Has been in designing, researching & developing, fabricating and sales of special vehicles since 1987. With the development of almost 30 years, D-One vehicle group has been a leading enterprise of Liangshan " China Trailer　( Special Vehicles) Industrial Base", recognized as leader of special vehicles in China. Our main products include: Skeletal-container-chassis, Platform-(Flatbed) trailer, Van-trailer, Side-fender-trailer, Liquid-tanker, Bulk-tanker, Dump-trailer, Low-bed-trailer, Port-equipment and other special vehicles, totally 10 groups and more than 160 models.