2. In terms of location, Changzhou is similar to Zhenjiang, Zhenjiang is close to Nanjing, and Changzhou is more developed than Zhenjiang.
3. In terms of professional strength, Jiangda's strength is machinery, and Changda's strength is oil, which has a certain reputation in the petrochemical field. Computer employment is wide, and petrochemical employment is narrow.
If it were me, I would choose Jiangda (personal preference).