PESI, DF, RBA, ZX Stock Market Update from PennyGovernance.com

Perma-Fix Environmental Services, Inc. (PESI) introduced its breakthrough soil remediation design using AMEC’s Orion ScanSortSM in-line assay and sorting system, which was developed to segregate radioactive impacted materials into “above and below� the sites’ approved acceptance criteria. Perma-Fix has a Strategic Alliance Agreement to jointly market and operate the technology with AMEC, an international engineering and project management company that developed the Orion ScanSortSM in-line assay system.

PESI is a nuclear services company and leading provider of nuclear waste management services. The Company’s nuclear waste services include management and treatment of radioactive and mixed waste for hospitals, research labs and institutions, federal agencies, including the Department of Energy (�DOE�), the Department of Defense (�DoD�), and the commercial nuclear industry. The Company’s nuclear services group provides project management, waste management, environmental restoration, decontamination and decommissioning, new build construction, and radiological protection, safety and industrial hygiene capability to our clients. The Company operates four nuclear waste treatment facilities and provides nuclear services at DOE, DoD, and commercial facilities, nationwide.

For more information about PESI please visit http://www.perma-fix.com

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Dean Foods Company (NYSE:DF), a leading provider of wholesome, nutritious dairy products in the United States , is proud to be recognized for its efforts to fight hunger by being named a national Mission Partner by Feeding America. Since 2008, Dallas -based Dean Foods donated nearly 40 million pounds of food and dairy products, hundreds of thousands of dollars and countless hours of volunteerism to fight hunger in communities with Dean Foods operations.

Dean Foods Company, together with its subsidiaries, operates as a food and beverage company in the United States.

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Ritchie Bros. Auctioneers Incorporated (NYSE:RBA), the world’s largest industrial auctioneer, sold more than €33 million ( US$44 million ) of equipment and trucks at a two-day unreserved public auction held at its permanent auction site in Moerdijk. Ritchie Bros. (www.rbauction.com) registered more than 1,300 bidders from almost 70 countries, including 575 online bidders that purchased €5.7 million ( US$7.5 million ) of equipment—a new site record.

Ritchie Bros. Auctioneers Incorporated, an industrial auctioneer, sells various equipment to on-site and online bidders worldwide.

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China Zenix Auto International Ltd. (NYSE:ZX) the largest commercial vehicle wheel manufacturer in China in both the aftermarket and OEM market by sale volume, recently announced that management confirms revenue guidance of approximately RMB 4 billion for the 2011 year ending December 31st .

China Zenix Auto International Ltd. , an investment holding company, engages in the research, development, production, and sale of commercial vehicle wheels to after market and original equipment manufacturer market in the People?s Republic of China.