Alcoa Fastening Systems (AFS), a unit of Alcoa, has signed a strategic technology and commercial co-operation agreement with Commercial Aircraft of China (COMAC). Alcoa has an existing partnership with COMAC since establishing a technology co-operation agreement in 2009 that examined advanced aluminium structural concepts, designs, and alloys for the C919 aircraft. AFS will now be a “key partner with COMAC in the development and production of its commercial C919” and provide technical assistance in fastener and assembly tooling selection; joint design consideration and quality system management. The technical assistance will include engineering, design, and training. COMAC will purchase a significant percentage of its fasteners from AFS for the initial production of the C919 aircraft.