Does curtain wall cleaning require qualification?

Curtain wall cleaning qualification requirements are an important part of industry license. Obtaining this qualification certificate shows that the enterprise has the ability of safe and legal construction. The qualification requirement of curtain wall cleaning is to check the degree owned or achieved by enterprises one by one from five aspects: construction safety, industry license, quality inspection, anti-corrosion painting and environmental protection license to ensure the quality and safety of curtain wall cleaning project.