Non-‘tunable’ continuous-wave ‘(CW) lasers’ having any of the following: 1. Output wavelength less than 150 nm and output power exceeding 1 W; 2. Output wavelength of 150 nm or more but not exceeding 510 nm and output power exceeding 30 W; Note : Item 2 above does not apply to Argon ‘lasers’ having an output power equal to or less than 50 W. 3. Output wavelength exceeding 510 nm but not exceeding 540 nm and any of the following: a. Single transverse mode output and output power exceeding 50 W; or b. Multiple transverse mode output and output power exceeding 150 W; 4. Output wavelength exceeding 540 nm but not exceeding 800 nm and output power exceeding 30 W; 5. Output wavelength exceeding 800 nm but not exceeding 975 nm and any of the following: a. Single transverse mode output and output power exceeding 50 W; or b. Multiple transverse mode output and output power exceeding 80 W; 6. Output wavelength exceeding 975 nm but not exceeding 1 150 nm and any of the following: a. Single transverse mode and output power exceeding 500 W; or b. Multiple transverse mode output and any of the following: 1. ‘Wall-plug efficiency’ exceeding 18 % and output power exceeding 500 W; or 2. Output power exceeding 2 kW; Notes: 1. Item b. above does not apply to multiple transverse mode, industrial ‘lasers’ with output power exceeding 2 kW and not exceeding 6 kW with a total mass greater than 1 200 kg. For the purposes of this note, total mass includes all components required to operate the ‘laser’, e.g., ‘laser’, power supply, heat exchanger, but excludes external optics for beam conditioning and/or delivery. 2. Item b. above does not apply to multiple transverse mode, industrial ‘lasers’ having any of the following: (a) Output power exceeding 500 W but not exceeding 1 kW and having all of the following: 1. Beam Parameter Product (BPP) exceeding 0,7 mm · mrad; and 2. ‘Brightness’ not exceeding 1 024 W/(mm · mrad) 2 ; (b) Output power exceeding 1 kW but not exceeding 1,6 kW and having a BPP exceeding 1,25 mm · mrad; (c) Output power exceeding 1,6 kW but not exceeding 2,5 kW and having a BPP exceeding 1,7 mm · mrad; (d) Output power exceeding 2,5 kW but not exceeding 3,3 kW and having a BPP exceeding 2,5 mm · mrad; (e) Output power exceeding 3,3 kW but not exceeding 4 kW and having a BPP exceeding 3,5 mm · mrad; (f) Output power exceeding 4 kW but not exceeding 5 kW and having a BPP exceeding 5 mm · mrad; (g) Output power exceeding 5 kW but not exceeding 6 kW and having a BPP exceeding 7,2 mm · mrad; (h) Output power exceeding 6 kW but not exceeding 8 kW and having a BPP exceeding 12 mm · mrad; or (i) Output power exceeding 8 kW but not exceeding 10 kW and having a BPP exceeding 24 mm · mrad; Technical note: For the purposes of note 2.a., ‘brightness’ is defined as the output power of the ‘laser’ divided by the squared Beam Parameter Product (BPP), i.e., (output power)/BPP 2 .