Machine tools for working any material by removal of material, by laser or other light or photon beam, ultrasonic, electrodischarge, electrochemical, electron beam, ionic-beam or plasma arc processes
The machine-tools of this heading are machines used for the shaping or surface-working of any material. They must meet three essential requirements :
(i) They must work by removing material;:
(ii) They must carry out operations of the kind performed by machine-tools equipped with conventional tools;:
(iii) They must use one of the following seven processes: laser or other light or photon beam, ultrasonic, electro-discharge, electro-chemical, electron beam, ionic-beam or plasma arc.