The InOxSide Fusion technology combines junction isolation and rear side polishing as a perfect preparation for a superior surface passivation. The new fusion process of alkaline polishing with minimal use of acid in a single machine allows for extremely low cost of ownership and efficiency increase. This space saving solution is the next generation of the proven and patented RENA single side etching technology. RENA provides the only one-tool solution for single side alkaline etching in the market.