Fill in the application form, review it, and finally sign it. 15 working days. According to official website of Tianjin Construction Bureau, the project manager needs to fill in the Project Manager Change Application Form and submit it to the company for review. After the review is completed, it shall be signed by the person in charge of the project, with a time limit of fifteen days. Tianjin, referred to as Jingu and Jinmen for short, is a provincial administrative region, municipality directly under the Central Government, national central city and megacity in People's Republic of China (PRC).