... color 2.anti-scratch, smoothness 3.high brightness and hardness Aluminum pipe This is one of our main popular products. With ... ,high brightness,hardness and very smooth3. Excellent one staion service for extruding, processing, anodizing and so onColors:Red,gold,green, ... paper, or per customers requirementsRemarks:OEM service; design service offered Aluminum square pipe (for suitcase,luggage case)