Air Quality Sensors Neg.Polarity TC Gas Sensor Helium and H2
| CAHTS | 8543700000 |
| USHTS | 9027102000 |
| JPHTS | 854370000 |
| KRHTS | 9027100000 |
| MXHTS | 9027100100 |
| BRHTS | 90271000 |
| ECCN | EAR99 |
