Wong Engineering provides surface treatment and finishing service to meet our customer needs. WE have surface treatment facilities like Sanding, Orbital Polishing, Tumbling, Sand Blasting, Needle Polishing and for surface treatment, WE provide Plating service with various kind of material: Conversion Coating ( Chromating ), Zinc Plating , EN Plating, Anodising, Wet Painting, Powder Coating, Wet Painting, Silkscreen for metal parts.