Normal PE

Burning easily, and so many drippings, and this drippings will is still burning.

B1 PE

When you put the Fire under this core, sometimes later, this panel is also start burning. But when you move away the fire, it will extinguish buy itself in some seconds. Not just al little drippings.

A2 PE

The best one, when you put the fire here, look, it hold on, no fire one the panel! That's the best one and best quality.