At China Aluminum Corporation, upon completion of the construction, the contractor is responsible for thoroughly cleaning all aluminum alloy doors, windows, and related installations within the subcontracted project, both indoors and outdoors. The contractor must also provide written confirmation to ensure the project meets industry quality standards and is ready for final acceptance.

1. Cleaning Sequence: The cleaning process should follow a top-down approach, starting with indoor areas before moving to outdoor surfaces. This ensures that dust and debris from upper areas do not settle on already cleaned lower sections.

2. Cleaning Methods: A neutral cleaning agent is recommended for glass surfaces, while a specific aluminum profile cleaner should be used for aluminum frames. It is crucial that these cleaning agents do not react with each other and should never be mixed. Before applying any cleaner, a small test should be conducted on an inconspicuous area of the aluminum to confirm it is non-corrosive. After cleaning, rinse the surface with clean water and dry it with a clean cloth to prevent water spots.

3. Main Cleaning Tools: The primary tool used for cleaning is a flat-rail standard window wiper equipped with an extension basket, which allows for safe and efficient cleaning of high or hard-to-reach areas.

4. Cleaning Procedure:

a. Indoor Cleaning: Begin by removing the protective tape from the door and window frames using a damp cloth or xylene to eliminate any residual adhesive. Next, carefully remove the protective film if it has been stained by the cleaning agent. Afterward, rinse the area with water and dry it with a clean cloth to ensure a spotless finish.

b. Outdoor Cleaning: For high-rise exteriors, a flat-rail window cleaner with an extension basket is used to reach and clean the aluminum structures safely and effectively. This method ensures that even the most difficult-to-access areas are properly cleaned without compromising safety or quality.

By following these detailed procedures, the project will meet the highest standards of cleanliness and quality, ensuring customer satisfaction and long-term durability of the aluminum installations.

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