... Aluminum. 2,Finish: Grey power coating3,Competitive sheet metal factory4. metal bracket Detail Feature: Materials: aluminum, also available ... lathesProcess:stamping,punching,pressing,machining,welding,bending & metal fabrication,etc Surface finish: Polishing, zinc/chromate plating ... machines etcPrimary competitive advantages:1,not large scale factory with low cost control;2,customers designs and ...