1, Nanjing: As the capital city of Jiangsu Province, Nanjing has many industrial parks and logistics bases, so there may be some trailer factories around Nanjing.
2. Suzhou: Suzhou is one of the economic centers of Jiangsu Province, with many industrial parks and development zones, including Suzhou Industrial Park and Kunshan City. There may be some trailer factories in these areas.
3. Wuxi: Wuxi is also one of the important cities in Jiangsu Province, with many industrial parks, logistics centers and possibly some trailer factories. Please note that the above are just some examples of areas where trailer factories are concentrated in Jiangsu Province, and they do not represent the whole situation.