Scary trashing of gear in Thailand

I'm sure anyone who's been to Ton Sai, or plans to visit, will have heard of the issues with the bolt disintegration here. Basically, due to the salt water, and some crazy gas that leaks from the limestone, the bolts here have a lifespan of about 20 minutes. O.k. maybe a bit longer but there are stories abound of bolts failing after only 3 months!
It's always a bit hard to believe though, and while I always followed the rules of clipping the newest bolt on each climb, I hadn't seen anything particularly crazy to show me how fast everything metallic gets destroyed here. Until I saw this....

A friend, lost his quickdraw on the beach. It was returned to him after two days by some people who found it. We guess it's been in the tideline so actually got wet from saltwater, but this is only two days worth of damange. Both gates on the quickdraw are sealed solid and there's mountains of calcite all over the exterior. In other words, completely destroyed. Scary.....