... routine Chromium plating technique process, after that, add WR-1 into the solution, heat to 40 ~50 ... CrO3 and H2SO4 to the routine, then add WR-1 additive according to the above methods.3. ... The daily replenishment of WR-1 additive: Because WR-1 additive doesn't join electrodeposition process, ... ~1/3 of the make-up bath volume. WR-1 Additive for High Efficiency & Wide-range Temperature ...