The pore size can be from sub-micron to tens of microns.
The material is hard and the breaking stress can reach 9001000 kg/cm2.
Flatness can reach 5 um/100 mm.
Its size can be: 2 inches, 3 inches, 4 inches, 5 inches, 6 inches, 8 inches, 12 inches... and other specifications, and can be produced in various sizes within 300mm.