DD6126S11 is jointly designed by and between Huanghai Company and the well-known design company (Bonetto), the inspiration of the front wall derives from a smile full of life, which caters to the happy and joyful feeling of those who works and lives in modern city. The delicate design of the rear wall is full and strong and has proper tension, meanwhile, the rear lamps which show originality are mellow and beautiful, increasing the smart impacts. The interior trim introduces MAN design idea, showing top grade, concise and lively, which reflects period flavor. The advantages of the interior roof are as following: light weight, stable physical properties, smooth surface, good environment protection and so on. So this model is called Bus of Harmony.

The appearance mixes the design idea and the environment of modern city of high speed, fast, high capacity, large open, low floor, environment protection, informatization, and Germany MAN technology introduced, which means leading cites to the future.