Copper dies too especially thinwall. Worst of all it freezes and blows up very reliably. Like any Mfg. process, its in the details, and I think only Uphonor has the machines and brains to provide a reliable tube. And now they likely have enough money to survive a class action suit if something starts failing - the small guys just walk off. Maybe it was MFG. process "-d" for duh? Or "-gm" - greedy morons.