SET: Looking at 1550 as a key support, but if it breaks, it's a long way down

I've been watching the SET for a while now. After hovering around 1560-1570, I think if it breaks below 1550, there could be a lot more selling pressure. It won't just be a small dip. If it can quickly get back above 1580, there's still some hope. But if not, we'll have to see if 1520 can hold.

Anyway, this kind of market is highly volatile. Anyone trading needs to be extra careful. I'm also waiting to see which way the market will go.