What is the difference between retread and soft wear?

The refurbished hard sheet is used to smooth the early cutting, the unit price of the soft grinding sheet is cheap, which can reduce the cost of abrasive, the difference between them is not only the thickness, but also the shape, the various shapes of the refurbished sheet you see, not to look good, it is a strong basis for learning, in order to better improve the grinding and grinding ability of the grinding sheet. The soft grinding plate is concerned with good adhesion, and pays more attention to the physical polishing fruit of the stone in the later period. There is also a difference between the material formula of the refurbished sheet and the soft grinding sheet.