ELEGOO
For the U.S. evidence set, the first-generation Centauri Carbon uses a 0.4 mm brass-hardened steel nozzle with a 320 °C maximum. ELEGOO lists carbon/glass-fiber reinforced filament, PLA, PETG, ABS, ASA, TPU, PET, PC and PA, but that list does not remove each material's drying, plate and slicer-profile conditions or establish Centauri Carbon 2 compatibility.
Creality
For the U.S. evidence set, K2 Plus supports 0.2/0.4/0.6/0.8 mm nozzles with a 350 °C maximum, and 0.4 mm is included. For CF-reinforced filament, Creality says to avoid 0.2 mm and prefers 0.6 mm, followed by 0.4 mm, with the documented temperature and cleaning conditions.
Creality
For the U.S. evidence set, 1 CFS provides 4 slots, and the K2 Plus page lists configurations up to 4 CFS units and 16-color printing. Do not feed TPU through CFS: flexible filament can bend in the path and cause loading or unloading failure.
Anycubic
For the U.S. evidence set, 1 first-generation ACE Pro provides 4-color printing and 2 units provide up to 8 colors. TPU 95A is not compatible with ACE Pro multicolor feeding, so it remains a single-color direct-feed task.
Bambu Lab
For the U.S. A1, Bambu Lab labels PLA, PETG, TPU and PVA ideal. It labels ABS, ASA, PC, PA, PET and carbon/glass-fiber reinforced polymer not recommended. A hardened nozzle does not by itself override the whole-printer material boundary.
Bambu Lab
A1 supports one AMS lite for up to four colors. The current U.S. product FAQ also says full-size AMS, AMS 2 Pro and AMS HT can connect through the A1-series AMS HUB accessory SA013. The hub requirement is the key condition.