Flow rate: Flow rate of Showers under all functions less than 9kg/min at 1bar water pressure Spray area: The diameter of spray area not exceed than 60cm on the height of 1.8 m. Plating Thickness: chrome thickness : more than 0.25μm， Nickel thickness : more than 10-15μm Anti-corrosion capacity: Neutral Salt-frog test 240hours Plating Cohesiveness: Plating no slipping off after Square Scratching Test Material: Brass