Are they treated with any special coatings that require specific care?

Assembling and disassembling a large-size hand crank foldable patio umbrella can vary depending on the specific model and design. However, here are some general considerations:
Assembly:
Parts and Tools: Typically, the umbrella will come with the main canopy, the pole, and sometimes a base or stand. Some umbrellas may require additional tools like a screwdriver or wrench for assembly, especially if a base needs to be attached to the pole.
Instructions: Most umbrellas come with assembly instructions that outline the steps clearly. These instructions should include how to attach the pole to the base (if applicable), how to secure the canopy to the frame, and how to attach any crank mechanisms or tilt features.
One-Person Assembly: In many cases, one person can handle the assembly process alone. However, having an extra pair of hands can sometimes make it easier, especially when attaching the canopy or securing the umbrella in a base.
Time Frame: Assembly time can vary but typically ranges from 15 minutes to 45 minutes, depending on the complexity of the umbrella design and the individual's familiarity with assembly tasks.

Disassembly:
Ease of Disassembly: Disassembling the large-size hand crank foldable patio umbrella is generally straightforward and often follows a reverse process of assembly. This includes removing any screws or attachments securing the canopy and detaching the pole from the base (if applicable).
Storage Considerations: Some umbrellas are designed for easy disassembly for storage purposes, particularly if they need to be stored away during the off-season or in inclement weather.
Portability: Considerations like weight and compactness when disassembled can affect how easily the umbrella can be moved or stored.
Tips for Smooth Assembly and Disassembly:
Follow Instructions: Always refer to the manufacturer's instructions provided with the umbrella.
Organize Parts: Lay out all parts and hardware before starting assembly to ensure nothing is missing and everything is easily accessible.
Secure Connections: Ensure all connections are securely tightened but avoid over-tightening, especially with screws and bolts.