When sourcing, prioritize Lead-Free Brass (H59/H62) as the primary body material to ensure durability and health safety. The Ceramic Cartridge is the heart of the faucet; ensure it is rated for at least 500,000 cycles to prevent leaks. For the pull-out function, the braided nylon or stainless steel hose should have a length of at least 1.2 to 1.5 meters with a gravity ball system for smooth retraction. Additionally, check the Electroplating Quality, specifically looking for a Chrome or PVD finish that passes a 24-hour Acid Salt Spray Test to guarantee corrosion resistance.