| Haitian Electronic Technology |
| Unit Conference system microphone unit: chairman microphone unit HT-7700c, delegate microphone unit HT-7700d. Support discuss, video, voting, electing, IC card sign-in function. Conference System Microphone Unit Conference system microphone unit: chairman ... |
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| From: China |
| Hits: 56 |
| Date: Jul 28, 2017 |
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