... zinc plated,black,etc 4.flat,pan, etc. types of hinges 1.Surface Finish: annealing, natural anodization, ... , grinding, broaching, welding and assembly.3.Variety of standards:ISO,GB,DIN,JIS,ANSI4.ISO9001-2008,SGS ... ourself to smile to each customer1)Details: Product name types of hinges Material1.Stainless Steel: SS201, SS303, SS304, ... :Tel: 0086-15994736840We are at service in 24 hours. Skype: szjbsy888