... steel 2.Zinc plated 3.ISO9001-2008 Gutter Bracket Roof Mount, Painted Steel 1. Material: iron, carbon steel, stainless steel ,brass ... machining: stamping, punching, bending ,CNC lathes, milling drilling,grinding etc5. Surface treatment: Zinc plated,power coated,chrome plated,hot-dip galvanized ... :86-0573-86887878 Fax :86-0573-86887758 Gutter Bracket Roof Mount, Painted Steel