Engineering quality supervision departments, construction units, supervision units and construction units. Four-way acceptance of hanging basket refers to an acceptance method involving engineering quality supervision departments, construction units, supervision units and construction units. In construction projects, the four-way acceptance of hanging baskets is usually carried out after the completion of the building exterior wall decoration project, which is used to check whether the installation quality and safety performance of hanging baskets meet the relevant requirements. During the acceptance process, the representatives of the four parties will conduct on-site inspection, testing and evaluation to ensure that the quality and safety performance of the hanging basket installation project meet the specifications and standards, thus ensuring the quality and safety of the building exterior wall decoration project.