By phone:

• For customers outside the Mainland China, please call
  (852) 2292 6000
  
• For customers within the Mainland China, please call
  (86) 755 2517 0150

  Service Hour
  9:00 a.m. - 5:30 p.m. Monday through Friday
  9:00 a.m. - 12:30 p.m. Saturday
  

By email:

Send an email to our customer service engineers, writing down the nature of your problem in detail. Under normal circumstances you will receive a response within 48 hours.

When you make your call or send your email, please provide the following information to our service personal:
VHSoft product name and serial number
Your name and telephone number