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Drop us a line below and we'll follow up within 24 hours. You can also contact us at for any questions.We are happy to advise and help you.

Orders & After-sale Service


WhatsApp: (00) +86 150-1949-9375

Headquarters:15/F,Hing Yip Commercial Centre,272-284 Des Voeux Road Central, Central, Hong Kong,999077


USA Office: 15650 Salt Lake Ave. City of Industry CA 91789


Head Company:Hongkong Valsun Technology Limited | Business Register Number:2263704




China Guangzhou Plenty Bicycle Limited


Tongtu Bicycle (Guangzhou) Limited


Service Hours: United States Central Standard Time (CST) working days from 7:00 PM - 4:00 AM  (except holidays)


If you have any questions before purchasing, please contact us via email, we will deal with your problem as soon as possible.

Comments and Suggestions

Any comments and suggestions are welcome. Please feel free to contact Vivi friendly customer service staff and help Vivi improve the quality of service. Thank you!Send an email to

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