... 2000 sreies~~~Al-Cu Alloy5000 series~~~Al-Mg Alloy6000 series~~~Al-Mg-Si Alloy7000 series~~~Al-Zn-Mg Alloy These models ... are widely used in electronic, instrument, medical, spinning machine, aviation, shipping, machinery ... .5.Technique procedures: die casting , make mould, extrusion ,CNC (milling finish), cutting, anodized6.Certificates ISO 9001:2000 ISO ...