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Smart Ring

2023-05-24

Smart Ring for Monitoring heart rate and blood oxygen

Shenzhen Yifeng Digital Electronics Manufacturing Co., Ltd.

Addr: F4 Bldg.4th jin mei wei industrial park, xin ye xi road, shajing street, bao'an, shenzhen

Post code：518104

Tel：0755-81495860

Email：stephen@efn.cn

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