When sourcing bathroom fittings, the material is the primary driver of both price and longevity. Solid Brass is the industry gold standard for faucets and valves due to its corrosion resistance and durability. For budget-conscious projects, Stainless Steel (Grade 304) offers excellent rust resistance, while Zinc Alloy is often used for handles to reduce costs. Ensure that the internal Ceramic Cartridge is tested for at least 500,000 cycles to prevent leaks. For surface finishes, prioritize PVD (Physical Vapor Deposition) or Electroplating that passes a 24-hour Salt Spray Test to ensure the finish won't peel in humid environments.