The most competitive thickness of wear layer should be between 0.3mm-0.5mm.

If less thickness, the film is easy to break during production, which make more production waste to increase the production cost. 3C produces 0.15mm-0.7mm wear layer

If 0.7mm, or thicker, the peeling strength is weaker, and the wearing strength is only a little higher than 0.5mm wear layer.