美国 · 品目· 11 个子目· 44 个税号
8540热离子、冷阴极或光电阴极管
Thermionic, cold cathode or photo-cathode valves and tubes (for example, vacuum or vapour or gas filled valves and tubes, mercury arc rectifying valves and tubes, cathode-ray tubes, television camera tubes)
子目（6 位 WCO 统一）
美国税号（10 位）
本品目下 美国海关的全部细分税号与首要税率
| HS 编码 | 商品描述 | 首要税率 |
|---|---|---|
| 8540.11.10 | Non-high definition, non-projection, having a video display diagonal exceeding 35.56 cm | 15% |
| 8540.11.10.30 | Not exceeding 39 cm | 15% |
| 8540.11.10.40 | Exceeding 39 cm but not exceeding 45 cm | 15% |
| 8540.11.10.50 | Exceeding 45 cm but not exceeding 50 cm | 15% |
| 8540.11.10.55 | Exceeding 50 cm but not exceeding 63 cm | 15% |
| 8540.11.10.85 | Exceeding 63 cm | 15% |
| 8540.11.24.01 | Having a video display diagonal not exceeding 34.29 cm | 7.5% |
| 8540.11.28.01 | Other | 15% |
| 8540.11.30.00 | High definition, having a video display diagonal exceeding 35.56 cm | 15% |
| 8540.11.44.01 | Having a video display diagonal not exceeding 34.29 cm | 7.5% |
| 8540.11.48.01 | Other | 15% |
| 8540.11.50.00 | Other | 15% |
| 8540.12.10.00 | Non-high definition | 3.6% |
| 8540.12.20.00 | High definition | 3.6% |
| 8540.12.50 | Non-high definition | 3.3% |
| 8540.12.50.40 | Projection | 3.3% |
| 8540.12.50.80 | Other | 3.3% |
| 8540.12.70.00 | High definition | 3.3% |
| 8540.20.20 | Cathode-ray tubes | 6% |
| 8540.20.20.40 | Color | 6% |
| 8540.20.20.80 | Other | 6% |
| 8540.20.40.00 | Other | 3.3% |
| 8540.40.10 | Data/graphic display tubes, monochrome; data/graphic display tubes, color, with a phosphor dot screen pitch smaller than 0.4 mm | 3% |
| 8540.40.10.10 | Color | 3% |
| 8540.40.10.50 | Other | 3% |
| 8540.60.00 | Other cathode-ray tubes | 3% |
| 8540.60.00.20 | Not exceeding 30 cm | 3% |
| 8540.60.00.65 | Exceeding 30 cm but not exceeding 36 cm | 3% |
| 8540.60.00.80 | Exceeding 36 cm | 3% |
| 8540.71.20.00 | Modified for use as parts of microwave ovens | Free |
| 8540.71.40.00 | Other | 3.7% |
| 8540.79.10.00 | Klystrons | 3.3% |
| 8540.79.20.00 | Other | 3.7% |
| 8540.81.00.00 | Receiver or amplifier tubes | 4.2% |
| 8540.89.00 | Other | 3.7% |
| 8540.89.00.20 | Gas and vapor electron tubes | 3.7% |
| 8540.89.00.40 | Diodes, triodes and tetrodes | 3.7% |
| 8540.89.00.60 | Light-sensing tubes | 3.7% |
| 8540.89.00.80 | Other | 3.7% |
| 8540.91.15.00 | Front panel assemblies | 5.4% |
| 8540.91.20.00 | Deflection coils | Free |
| 8540.91.50.00 | Other | 5.4% |
| 8540.99.40.00 | Electron guns; radio frequency (RF) interaction structures for microwave tubes of subheadings 8540.71 through 8540.79, inclusive | Free |
| 8540.99.80.00 | Other | Free |