Exhibit 24

                        POWER OF ATTORNEY


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes
and appoints Craig A. Creaturo and Michelle L. Freehling, and each of
them severally, as the undersigned's true and lawful attorney-in-fact
and agent, with full power of substitution and resubstitution, for the
undersigned and in the undersigned's name, place and stead, in any and
all capacities, to sign any and all forms pursuant to Rule 144 of the
Securities Act of 1933 and Section 16 of the Securities Exchange Act of
1934, or any successor provisions to the foregoing, and to file the
same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission and with any
stock exchange, granting unto said attorney-in-fact and agent full power
and authority to do and perform each and every act and thing requisite
and necessary to be done in accordance therewith, as fully to all
intents and purposes as the undersigned might or could do in person,
hereby ratifying and confirming all that said attorney-in-fact, agent,
or their substitutes may lawfully do or cause to be done by virtue
hereof.



April 1, 2011                           /s/ Howard H. Xia
                                        -----------------
                                           Signature


                                          Howard H. Xia
                                          Printed Name