... ,good quality 2.material:stainless steel 3.surface:powder coated metal Siren BoxDetail Feature: Materialsstainless steelSoftware for drawing PRO/E ... punching,pressing,machining,welding,bending & metal fabrication,etc Surface finish Polishing,powder coatedQuality Guarantee metal processing, surface treatment, QC testing ... or third inspection are accepted. stainless steel powder coated alarming metal box