The current state-of-the-art technologies of super-finish polishing allow to achieve the roughness of ca 2 nm. The use of our polishers based on nanoparticles allows to reduce the roughness by a factor of 2 and reach the value of 0.9 nm. These polishers can be supplied in hydrophilic, hydrophobic and all-purpose forms. Standard PL-DiaPol is a hydrophilic polisher.