EX-24.1 2 rrd314668_355479.htm POWER OF ATTORNEY

rrd314668_355479.html

                                                                             Exhibit 24.1

                                      POWER OF ATTORNEY


      The undersigned constitutes and appoints Timothy J. Donnelly and Andrea Knight, and
each of them, as the undersigned's true and lawful attorneys-in-fact and agents, with full power
of substitution and resubstitution, for the undersigned and in the undersigned's name, place and
stead, to sign any and all Securities and Exchange Commission statements of beneficial
ownership of securities of American Vanguard Corporation, a Delaware corporation (the
"Company") on Forms 3, 4 and 5 as required under Section 16(a) of the Securities Exchange
Act of 1934, as amended, and to file the same with all exhibits thereto, and other documents in
connection therewith, with the Securities and Exchange Commission, the Company and the
stock exchange or national market system on which such shares are publicly traded, granting
unto said attorneys-in-fact and agents, and each of them, full power and authority to do and
perform each act and thing requisite and necessary to be done under said Section 16(a), as fully
and to all intents and purposes as the undersigned might or could do in person, hereby ratifying
and confirming all that said attorneys-in-fact and agents, and each of them, may lawfully do or
cause to be done by virtue hereof.

      A copy of this power of attorney shall be filed with the Securities and Exchange
Commission.  The authorization set forth above shall continue in full force and effect until the
undersigned revokes such authorization by written instructions to the attorneys-in-fact.

      The authority granted hereby shall in no event be deemed to impose or create any duty
on behalf of the attorney-in-fact with respect to the undersigned's obligations to file Forms 3, 4
and 5 with the Securities and Exchange Commission.

Dated:  July 6, 2012




                                                    /s/ Ad de Jong
                                                    ----------------------------------------
						    Ad de Jong