The income of King-Long United Automotive Industy (Suzhou) Co. Ltd overpassed 2.5 billion yuan in 2004, the annual growth rate exceeds 28%. The sale volume of the company up to 9100 sets, increase 10% compared with the same period of last year. Turn over the tax revenue of nearly 100 million yuan for the first time, continue occupying the top three position in auto industry and becomes the member of China 100 tops mechanical industry.

Suzhou King-Long Company had built up the production basement which covering an 400,000 square meters in 2003, the annual production capacity reached 15,000 passenger buses and chassises. The company introduced internationally advanced technology, realized the specialization and scale production. the chassisse product applied to China auto enterprises extensively.

In 2003, SZKL developed the HAIGER series including three types: S, W and B. S includes passenger transport, tour and group buses and coaches, which is the mainstream of SZKL products. W stands for sleeper coaches. B stands for city buses. Its great power, low emission and fuel consumption, good complete bus match and easy maintenance feature the HAIGER series. Once put into the market, it has been widely approved by customers. "safety, comfort and with added value". customers make high appraisal on the product.