To maintain a self-opening and closing three-folding umbrella, follow these tips:

1. Proper opening and closing: When using the umbrella, make sure to follow the correct procedures for opening and closing it. Read the manufacturer's instructions that came with the umbrella to understand the specific steps. Avoid forcing the umbrella open or closed as this can lead to damage.

2. Drying: After using the umbrella in wet conditions, allow it to fully dry before folding it back. Leaving a wet umbrella folded can cause mold or mildew to develop, which can damage the fabric and frame. Open the umbrella indoors or in a well-ventilated area and let it air dry completely.

3. Cleaning: Regularly clean the umbrella to remove any dirt, debris, or stains. Use a soft cloth or sponge and a mild soap solution to gently wipe the fabric. Avoid using harsh chemicals or abrasive materials that could damage the umbrella's surface or coating.

4. Storing: When not in use, store the umbrella in a dry place to prevent moisture damage. Avoid storing it in humid areas or in direct sunlight for prolonged periods, as this can cause fading or deterioration of the fabric and frame. If possible, use a protective umbrella cover or sleeve to shield it from dust and potential damage.

5. Inspecting for damage: Periodically inspect the umbrella for any signs of damage. Check the fabric for tears or holes, the frame for bent or broken parts, and the opening and closing mechanism for smooth operation. If you notice any issues, discontinue use and repair or replace the umbrella as necessary.

6. Wind caution: While self-opening and closing umbrellas are designed to withstand windy conditions, it is still advisable to exercise caution during strong winds. Avoid using the umbrella in high winds or storms to prevent damage to the frame or the risk of the umbrella turning inside out.