... Nickel plating and chromate plating 3.ISO9001:2008 4. Manufacture Float Valve1. Product Introduction Item DescriptionNameFloat ValveMaterialBrass, CopperSurface TreatmentZinc plating ... tester, hydraulic valve test bench, micrometer, thread ring gauge and plug gauge and other regular gauges.(5)Certificate: SGS ISO ... Xishanqian village, Huanxiu street, Jimo, Qingdao, Shandong province, China Float Valve