… material by removal of material, by laser or other light or photon beam, ultrasonic, electro-discharge, electro-chemical, electron beam, ionic-beam or plasma arc processes; water-jet …
Explanatory notes
… material by removal of material, by laser or other light or photon beam, ultrasonic, electro‑discharge, electro‑chemical, … equipped with conventional tools; (iii) They must use one of the following seven processes : laser or other light …