Zinc die casting notebook shaft 1.Professional process 2.ISO9001,ROHS,SGS 3.Dimension stability ... ,Canada and America, etc.Product details:Zinc die casting notebook shaft Materialaluminum alloy A380,A360.ADC12,Zinc alloy 3#zinc,5 ... &zinc alloy casting: include automotive parts, railroad parts, medical parts, marine parts, lighting parts, pump body, valve parts, architectural parts and ...