... of surface treatment 2.good surface. 3.aluminum profile 4.high quality and best price Material6063,6060,6061,6005TemperT4,T5,T6Surface ... ≤6mShapeRound,Square,T-slot,or as per the drawings and samplesFabricationcutting,drilling,punching,bending,etcWall thickness≥0.5mmPackageinner plastic ... Sample Room:Please contact us for more details freely. aluminum window profile with patent design good appearance