Vtth1 # & additive tr-173a: seven-color passive use (not stearic acid-coated carbonate powder, made from 25.15 stones, with a grain size of less than 1mm)
Vtth1 # & additive tr-173h: seven-color passive use (not stearic acid-coated carbonate powder, made from 25.15 stones, with a grain size of less than 1mm)