EX-24.1 2 rrd178423_202134.htm POWER OF ATTORNEY

rrd178423_202134.html

		POWER OF ATTORNEY


The undersigned constitutes and appoints James A. Barry, Timothy J. Donnelly,
and Michael V. Lee, 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:   March 11, 2008




						_/s/ David T. Johnson___________
						David T. Johnson
						Chief Financial Officer