we are one of the main manufactuer of aluminium magnesium alloy in China we are one of the main manufactuer of aluminium magnesium alloy in China:Specs: 20, 30, 50% Mg 1. 250g/block,150g/block shape, 20 kg/packaging.2. 6~8kg/block, broken Waffle ingot.3. Other specifications can be made to customers' demand.Pls contact us for more information. aluminium magnesium alloy