1.62# Brass ingots,imported from Korea and Japan. 2.7layers plating with a special SP layer to protect scratch. The thickness of electroplate -Nickel plate:20um~23um (micron) -Chrome plate:0.25um~0.4um (micron) 3. The ceramic cartridges (head-part) that we use are from: Austria: Kerox 4.Coating quality Corrosion resistance testing-Neutral Salt Spray Test (NSS test) is 250 hours. 5.The minimum flow pressure to activate the diverter function in our bath/shower mixer is 0.05Mpa (0.5bar) which is comply to European and international Standard. 6.Our faucets specification: - Test pressure 1.6Mpa (16bar) -Flow pressure Min. 0.05Mpa (0.5bar) Max. 1.0Mpa (10bar) -Recommended pressure: 0.1Mpa to 0.5Mpa (1 to 5 bar) -Temperature at hot water inlet: Max.90 degree C 7.The lead(plumbum) composition of our brass is not exceeding 1.6% which is comply to EN and other international standard. We are the best quality in China by German technic and Italian equipment. We have much more other styles,please contact with us