Exhibit 99.4

                              POLYONE CORPORATION

                                   LETTER TO
                     DEPOSITORY TRUST COMPANY PARTICIPANTS

                          EXCHANGE OF ALL OUTSTANDING
                         10 5/8% SENIOR NOTES DUE 2010
                                      FOR
                         10 5/8% SENIOR NOTES DUE 2010

- --------------------------------------------------------------------------------
 THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
           , 2003, UNLESS EXTENDED (THE "EXPIRATION DATE"). OUTSTANDING NOTES
 TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME PRIOR TO 5:00
 P.M., NEW YORK CITY TIME, ON THE EXPIRATION DATE.
- --------------------------------------------------------------------------------

To Depository Trust Company Participants:

     We are enclosing herewith the material listed below relating to the offer
by PolyOne Corporation to exchange its 10 5/8% Senior Notes due 2010 (the
"Exchange Notes"), which have been registered under the Securities Act of 1933
(the "Securities Act"), for a like principal amount of its issued and
outstanding 10 5/8% Senior Notes due 2010 (the "Outstanding Notes"), upon the
terms and subject to the conditions set forth in PolyOne's Prospectus, dated
          , 2003, and the related letter of transmittal (which together
constitute the "Exchange Offer").

     Enclosed are copies of the following documents:

        1. Prospectus, dated           , 2003;

        2. Letter of Transmittal (together with accompanying Substitute Form W-9
           Guidelines);

        3. Notice of Guaranteed Delivery; and

        4. Letter that may be sent to your clients for whose account you hold
           Outstanding Notes in your name or in the name of your nominee, with
           space provided for obtaining such client's instruction with regard to
           the Exchange Offer.

     We urge you to contact your clients promptly. Please note that the Exchange
Offer will expire on the Expiration Date unless extended.

     The Exchange Offer is not conditioned upon any minimum number of
Outstanding Notes being tendered.

     Pursuant to the letter of transmittal, each holder of Outstanding Notes
will represent to PolyOne that:

        (i)  any Exchange Notes that the holder will acquire in exchange for
             Outstanding Notes will be acquired in the ordinary course of
             business of the holder;

        (ii)  the holder has not engaged in, does not intend to engage in, and
              has no arrangement with any person to engage in, a distribution of
              any Exchange Notes issued to the holder; and

        (iii) the holder is not an "affiliate" (as defined in Rule 405 under the
              Securities Act) of PolyOne.

     If the holder is a broker-dealer (whether or not it is also an "affiliate")
that will receive Exchange Notes for its own account in exchange for Outstanding
Notes, it will represent that the Outstanding Notes were acquired as a result of
market-making activities or other trading activities, and it will acknowledge
that it will deliver a prospectus meeting the requirements of the Securities Act
in connection with any resale of those Exchange Notes. By acknowledging that it
will deliver and by delivering a prospectus meeting the requirements of the
Securities


Act in connection with any resale of those Exchange Notes, the broker-dealer is
not deemed to admit that it is an "underwriter" within the meaning of the
Securities Act.

     The enclosed Letter to Clients contains an authorization by the beneficial
owners of the Outstanding Notes for you to make the foregoing representations.

     PolyOne will not pay any fee or commission to any broker or dealer or to
any other person (other than the Exchange Agent) in connection with the
solicitation of tenders of Outstanding Notes pursuant to the Exchange Offer.
PolyOne will pay or cause to be paid any transfer taxes payable on the transfer
of Outstanding Notes to it, except as otherwise provided in Instruction 6 of the
enclosed letter of transmittal.

     Additional copies of the enclosed material may be obtained from the
undersigned.

                                          Very truly yours,

                                          THE BANK OF NEW YORK