Customer Service and Information
If you would like to speak with a Customer Service representative about mail orders, orders placed online, or if you have a general request for information about a product. Please send e-mail inquiries to our sales team. We will response all of emails within 24 hours on monday through friday and within 48 hours on saturday and sunday.
If you have general questions about an order you've placed, about a product in the online store, or need assistance in browsing our website, visit Helps page
Hours of Operation.. Monday - Friday 9:00 am - 4:00 pm Pacific Time
(new location july 1, 2009) 9663 E garvey suite 122
El monte CA 91733
Phone....................... 626-771-3589
All mails please send P.O Box:
P.O BOX 5982
EL MONTE CA 91734
Webmaster
If there is a broken link, error message, please contact the Webmaster at service@cosia.com and give him details about the problem (i.e. the URL where you ran into the problem, your browser version etc...) We would really appreciated your help.