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    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.)

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Reseller Overstock Returns

  • A Return Authorization Number must be obtained first and marked on the outside of the package.
  • Requests for return authorization must sent in writing and must include the correct invoice number, the invoice date, and original quantity purchased.
  • Special-order books and out-of-print titles may not be returned. Audio cassettes, videocassettes, audio CDs, computer software, VCDs, DVDs, and field test editions are all non-returnable items. Most imported titles are also non-returnable.
  • Books in unmarked, salable condition may be returned, with prior authorization, between four months and one 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.
  • Customer account must be in good standing, and should not have any past due invoices.
  • Credit from returned merchandise is non-refundable and is for use against future purchases.

Send overstock books to:

Cheng & Tsui Company
C/O PSSC Returns Dept
46 Development Road
Fitchburg, MA  01420