All material from Hanglu is produced according to

1. the Aluminium Association, abbr AA,

2. Aerospace Material Specifications, abbr AMS,

3. American Society For Testing And Materials, abbr ASTM,

4. Federal Specifications

On the surface of the plates, name of manufacturer, alloy, temper, size, lot number, standard etc are clearly stenciled. We provide mill certificate for all the material we sell.