picture frame material is zinc alloy; with ... also available in iron, brass, steel, aluminum alloy, etc.Process and technology: Die casting, polishing, plating, painting ... ) , laser engraving, soft enamel, emboss, Sand blasting, etc.Available plating: gold, silver, nickel, chrome, pewter,matt/ ... independently, i.e. in house mould manufacturing facility. 6) Certification: ISO 9001:2000 / ISO 9001:2008 , ...