Unsulphured Dried Fruit What's The Difference Between Sulphured And Unsulphured Dried Fruit?

What's the difference between sulphured and unsulphured dried fruit? - unsulphured dried fruit

Containing a sulfur addition to the obvious and the other not, how do you know the difference? Sulfur is dangerous to eat fruit? I ate a lot of dried ginger for morning sickness, and I read that it can be unhealthy.