... bag packing then pannelSurface:Pure,Mill finished,Anodizing,Powder coatingtype:round,square and so onPackaging & DeliveryPackaging ... CastingNameDie casting productMaterialAluminum alloy,Various kindsSurface TreatmentSandblasting, Tumbling, Powder coating, Painting, Chromating(chemical film) and Polishing. ... Erosion The PVC profiles does not eroded by acid, base, and does not affected by exhaust ...