2-3 um1.Material: (57-58)brass body, zinc handle,2.Finished: Chrome plated,brass nickled (can do it as customer's request)3.Cartridge: 40mm, high quality ceramic cartridge (brand cartridge,great wear-resisting and airproof)4.Machined precisely and polished under strict control: 2-3um5.Packing: bubble bag/cloth bag + white box /color box

basin faucet