Welcome: Shenzhen YueFa Technology Co., Ltd
joe@yftechnology.com ; david.wei@yftechnology.com 86-755-88888888
New smart ring with display for touch, heart rate, blood oxygen, health, sleep, exercise, ring for e-book, remote control, photo taking YR13
Contact: YueFa Technology
Phone: +86 15989380466
E-mail: joe@yftechnology.com ; david.wei@yftechnology.com
Add: Longhua new district shenzhen city, guangdong province, China
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