I think this is brilliant.
I just figure their rivers and estuaries don't have rocks because aluminum will not slide over a rock. It sticks like its nailed to it. Forever. and ever. A point I was careful to make to my daughter when we were canoeing last month on the Potomac.
Glad to know I was helping the economy of Vietnam! Isn't that the essence of capitalism, i.e., "creative destruction?" :)
I thought you might drop by and get a kick out of this one.