... /MaterialFull Steel(high quality cold-rolled steel) W/ epoxy resin powder finishCertificateISO&CEFeatures1.excellent anti-corrosion, anti-scratching, ... Surfaces are phosphated, acid-cleaned, then baked with EPOXY resin powder.5.Reinforcing columns within the structure enhance weight ... 2.Surfaces are phosphate, acid-cleaned, then baked with EPOXY resin powder.Door Hinges: The DTC, 90°, 100000 life ...