• Educators
  • Students
    Download your digital resources for Cheng & Tsui titles.

    Key Redemption

    Product Registration Help

    Product Registration Help

    To access purchased content or to download files from the Companion Website, you will need to create an account and register your product.
    Sign in to an existing account or register a new Cheng & Tsui account and enter your product key exactly as it appears.

    (Note: Some products will require you to answer a validation question instead of entering a product key.)

  • Store

    Browse Megamenu

  • E-Learning


Cheng & Tsui Company is located in downtown Boston at 25 West Street, just up the street from Chinatown, and a short walk from the Park Street (Red and Green lines) and Downtown Crossing (Red and Orange lines) T stations.

Mailing Address

Cheng & Tsui Company
25 West Street
2nd Floor
Boston, MA 02111-1213 USA


Phone & Fax

Phone (toll-free): (800) 554-1963
Phone: (617) 988-2400
Fax: (617) 426-3669
Alternate Fax: (617) 556-8964

We are available during our regular business hours, Monday through Friday, from 9 a.m. to 5 p.m., Eastern Standard Time.