Remove burrs after drilling, clean before applying dry film, and clean before applying solder mask
Remove burrs after drilling
Cleaning before applying dry film
Cleaning before solder mask coating
Removal of plug ink
Cleaning of stainless steel pressure plate
| granularity(Grit) | #320 | #400 | #600 | #800 |
| #1000 | #1200 | #1500 |
