Not true. There are many reputable aluminum extrusion suppliers in the US. At the time this was going on, I was in charge of quality and technical services for one such company. Sapa, at the time, was considered a low-quality producer, and this really surprises me they were able to land a contract for aerospace products like this. Hate to say it, but whoever approved these contracts must share some blame in this. Sapa produced crap, and everyone in the industry knew it.