... mold making, fusion casting, extrusion, quenching, artificial aging, anodic oxidation, insulation composite, electrostatic spraying, etc. Surface Treatment wiredrawing, sandblasting, oxidation, coloration ... , electrophoresis, etc Classification (1)series1 – 6,(2)fittings series(3)heat insulation series(4)normal doors and windows section series(5)wall ...