Apart from natural timber, harvested from trees, many wood-based panel products are produced which includes:

A. Ploywood (including blackboard)
B. Particle board
C. Compressed fibreboard
D. Non-compressed fibreboard
E. All of the above

The correct answer to the question: "Apart from natural timber, harvested from trees, many wood-based panel products are produced which includes:" is "All of the above".