Beijing Yinhe Jinyuan STD Co.Ltd is one of the leading China talk back system manufacturers, welcome to wholesale cheap RoHS, CE and FCC window talk device, talkback controller, exterior wireless intercom, window intercom system, simple talkback system, intercom paging systems, counter intercom system, hardwired intercom systems from our factory.

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3-1104, Aoyu Building, Daxing,Beijing, China

86 10 60240439


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