... OEM Ability:1) Machines:Die casting machine for alloy products, Stamping Machine for brass products2) Surface Coating:Polishing,Electroplate,Enamel,Pad ... manual and semi-auto fasterning machines for testing button5) Materials: H65 Brass & #3 Zinc Alloy, Eco-friendly by SGS approved6) ... ,Sliver,Gold,Brass,Copper,Gun metal, Pewter, Black nickel, alloy etc.9) Payment: 30% deposit, 70% balance before ...