Traditional Culture Encyclopedia - Hotel reservation - What are the corresponding standards of F standard and W standard in white corundum micropowder?

What are the corresponding standards of F standard and W standard in white corundum micropowder?

The corresponding standards of F standard and W standard in white corundum micropowder are:

F in white corundum micropowder is marked with F sand,16 # 20 # 24 # 30 # 36 # 46 # 60 # 80 #100 #120 #150 #180 #.

W in white corundum micropowder is W micropowder, 320#-8000#

There is also a section of sand: 0-1mm1-3mm 3-5mm 5-8mm.