You may contact us in several ways.

By mail:
Customer Service Department:

CHS International Research LTD
927 N. Main Street
Orange, CA 92867
USA

By phone:
(714)-997-1956 (310)-800-6668 

By fax:
(714)-663-2613

sales: info@chsir.com

tech support: xiaomiz@uci.edu

Contact Dr. Charlie (Xaioming) Zhu(朱晓鸣)

E-mail is the most convenient way to communicate with us.  If you did not hear from us, try send again or send us fax at: 714-663-2613