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    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.)

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Returnable Items

Overstock Items

  • Returns will be accepted for regular stock titles. Special-order books and out-of-print titles may not be returned. Audiocassettes, videocassettes, audio CDs, computer software, VCDs, DVDs, and field test editions are all non-returnable items.
  • Books in unmarked, saleable condition may be returned between four (4) months and one (1) year from invoice date. Price stickers or their remnants are unacceptable.
  • Invoices for these books must have been paid in full prior to such return.
  • Requests for return authorization must include the correct invoice number, the invoice date, and original quantity purchased. Requests with incorrect invoice numbers will automatically be refused.  
  • Customer account must be in good standing, not more than 3 months overdue.

Send overstock books to:

Cheng & Tsui Co.
RA#
C/O PSSC Returns Dept
46 Development Road
Fitchburg, MA 01420

 

Defective or Damaged Books

Returns must be made for exchange or account credit only within one (1) month of invoice date and must be clearly marked as defective or damaged.

Send defective or damaged books to:

Cheng & Tsui Co.
RA#
25 West Street
Boston, MA 02111-1213