Features: 1) cartridge has 300,000-time guarantee, five years guarantee for quality.2) Chrome galvanized, polished mirror surface, the plating is usually 8-12UM.3) Various color/finish: polished chrome, gold, antique bronze, antique brass, brushed nickel, satin chrome, and paint4) Same pattern available in a set: kitchen mixer, Lavatory mixer, bathtub mixer, bidet mixer, and shower mixer5) Corrosion test (neutral) 120 hours.6) OEM /ODM welcome