1. Professional image: As a research institute, CNOOC Research Institute requires employees to wear formal professional clothes to show their professional image. Wearing a formal suit can give people a formal and professional impression, reflecting employees' professionalism and attention to their work.

2. Uniform standards: Wearing formal clothes helps to unify employees' gfd and dress standards. In the workplace, a uniform dress code can reduce the differentiation brought by personal dress and maintain the overall image and cultural unity of the enterprise.