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Beijing,Beijing,China China
Contact Person Ms. Grace Duan
Address Beijing, Beijing
General information: Wireless calling system is composed of transmitter and receiver. All transmitters need to be worked with signal receivers. This
WhatsApp:+8613341002976 E-mail:***** *:*@********************Dimension 103 x 103 x 15.6mm Net Weight 97g Power Built-in 3.7V lithium polymer battery,
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