Welcome to conference system of CVJ2020 ! Any Questions, Please Contact to: 

The Appointed PCO (Professional Conference Organizer) for CVJ:
Sigma Marketing and Cons. (Beijing) Co. Ltd
Address: Room807, NO.126 Jianguo Road, Chaoyang District, Beijing ,China
Tel: +86 1065664332

E-mails:

For Registration and Payment: reg@cvj2020.org
For Abstracts Submission: abstract@cvj2020.org
For Hotel Reservation: hotel@cvj2020.org