precision processing aluminium products 1.Material:pure aluminum/duralumin. 2.for machinery,autos,equipments. 3.Bit tolerance 1.Features: 1. Raw materials: ... duralumin2. Resistant corrosion,resistant aging, fastness, easy installation.3. Utility: machinery, autos, equipments.4.Surface treatments:deburr,polishing,sandblasting,nickel plating ...