D7222A Desktop Delegate MICSeptember 6, 2021This product is a conference speech mic integrating speaking and voting. With 315mm and 415mm in length optional for the microphone rod, available in black and silver colors. D7222A is a desktop delegate microphone.view
D6221 Conference Speech & Vote Chairman UnitNovember 30, 2016D6221 Desktop Chairman Speech/Vote Unit provides functions such as speech, vote, check-in and self-checking.view
D7224A Desktop Delegate MICOctober 22, 2021This product is a conference speech mic integrating speaking and voting. With 315mm and 415mm in length optional for the microphone rod, available in black and silver colors. D7223A is a desktop chair...viewwe will contact you within 24 hours.
Marching into the Central Area in Beijing Olympic Games: Olympic Common DomainNovember 29, 2016Being the world spotlight, the Olympic Games is about to be held in Beijing magnificently. After scoring a first by marching into some Olympic venues like the Olympic Sports Center on June 15th, 2007,...view
Sound Effect Principle of Surface Mount Ceiling SpeakersNovember 6, 2020Surface mount ceiling speakers are also known as ceiling speakers. Large-sized ceiling speakers have a larger diaphragm diameter, and the volume of air that is pushed will become larger and larger, an...view
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