when buying vinyl, what is :
thickness - mil vs micron. How many mil = micron ? I see some mention 1 or 2 or 2.5mil and others 70, 80 micron etc . .
premium (951) "cast" vs high performance (751) "cast". What's the difference between "cast" and "cal (651, 641, 631 etc . . ?)
for Laminates, I...