Shenzhen Sayin Smart Technology Co.,Ltd.
ADD:Floor 2nd, Building 1, Guanlan High-tech Industrial Park, Road, Guanlan Street, Longgang District, Shenzhen , China
Website:www.isayin.com
E-mail: info@isayin.com
Contact name:Jane Chang
Cellphone/WhatsApp/Skype/Wechat:+8613538059325
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