According to Article 37 of the Regulations on Quality Management of Construction Projects, the project supervision unit shall send the chief supervision engineer and supervision engineer with corresponding qualifications to the construction site. Without the signature of the supervision engineer, building materials, building components and equipment shall not be used or installed in the project, and the construction unit shall not carry out the construction of the next process. Without the signature of the chief supervision engineer, the construction unit will not allocate the project funds and will not carry out the completion acceptance.