Cleaning and passivation agents are environmentally friendly chemical formulations composed of multiple agents that possess chelating, cleaning, dispersing, and film-forming properties. They are characterized by fast cleaning speed, excellent cleaning performance, rapid film formation, fine and uniform membrane structure, good chemical stability, low corrosion rate, and strong adaptability to water quality. This product is primarily used for cleaning and pre-filming heat exchange equipment and pipelines in new or newly repaired circulating cooling water systems, and is especially suitable for online cleaning and pre-filming of circulating water systems without shutdown.