Hyper editorial office, Youke Publishing Co., Ltd.

Address: 43 Beisanhuanzhong Street, Haidian District, Beijing, 100088, China

Tel: +86-10-82241917

Fax: +86-10-82240868

Email address: Hyper-editor@youkepub.com

Should you have any additional questions or require further assistance, please contact the Hyper Editorial Office using the contact details provided above.