| 9031.10.00 | - Machines for balancing mechanical parts | |
| 9031.20.00 | - Test benches | |
| 9031.41.00 | -- For inspecting semiconductor wafers or devices or for inspecting photomasks or reticles used in manufacturing semiconductor devices | |
| 9031.49.00 | -- Other | |
| 9031.80.00 | - Other instruments, appliances and machines | |
| 9031.90.00 | - Parts and accessories |