| 2SA1694 | Anqiu Huichuan Electronic | Transistor for Sound and Power Amplifier |
| 2SC4467 | Anqiu Huichuan Electronic | Transistor for Sound and Power Amplifier |
| TIP122 | Anqiu Huichuan Electronic | Darlington Transistor |
| TIP142 | Anqiu Huichuan Electronic | Darlington Transistor |
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