Selecting the appropriate material is critical for longevity. For outdoor public spaces, prioritize 304 or 316 stainless steel or natural stone (granite/marble) due to their superior weather resistance and durability. For indoor decorative use, polyresin or fiberglass is preferred as it is lightweight, easy to mold into intricate designs, and cost-effective for shipping. Ensure that any metal components are treated with anti-corrosion coatings if the fountain will be exposed to saline environments or high humidity.