How about the difference between glass fiber cloth and ordinary chemical fiber cloth?
The glass fiber cloth will have a lot of small broken fibers, as small as tied to the body will be swollen, very uncomfortable, the proportion of glass fiber is 2.6, should be heavier, is in glass cloth will feel a little hard, especially the furnace glass fiber will be more hard, see broken rolls without alkali glass cloth is blue green ends, the heat conduction speed of glass fiber should be better than chemical fiber glass fiber cloth, no ordinary fabric density at relatively loose.
My major is chemical fiber. It's easy to tell apart! You can burn it with a fire. It can melt and drop like a candle. (careful not to stick to your body and burn it!) It's a synthetic fabric, not a fiberglass fabric.
It's simple. The fiberglass inside the fiberglass fabric is generally capable of over 750 degrees Celsius. You burn them completely, then look at the residual weight and shape of the burn.
