China Market Update from Electronic Sensor Technology

Friday, June 29, 2007, 9:30 am ET

NEWBURY PARK, Calif.--(BUSINESS WIRE)--Electronic Sensor Technology (EST) (OTCBB:ESNR - News), a leading provider of innovative homeland security and environmental solutions, announces the receipt of additional orders for 4 zNose instruments from its distributor in China. The instruments will be used by China to help clean up its water resources and is part of China’s recently announced $136 billion initiative to clean up its environment.

Electronic Sensor Technology has approximately 60 instruments in China, most of which are employed in the detection of pollutants in rivers and lakes. Hunan Province recently purchased 10 zNose units to assist its water pollution cleanup efforts.

The zNose is also being used by the Department of Public Security in Beijing in the detection of illegal drugs. The effectiveness of the zNose in this application further underscores the versatility of the instrument.

“We expect continued growth from these expanding markets for the zNose. Additionally, our experience in China demonstrates that the zNose is a versatile instrument with operating capabilities in challenging environments” states Teong Lim, CEO.

For more information on the use of the zNose® for environmental applications, click on the following link:

http://www.estcal.com/TechPapers/Environmental/WaterPollution2006.doc.

About Electronic Sensor Technology:

Founded in 1995, Electronic Sensor Technology has developed and patented a chemical vapor analysis process with applications for the homeland security and environment markets.

SEC Filings and Forward-Looking Statements

This press release includes forward-looking statements, including the Company's expectations regarding its ability to develop and access capital markets and its ability to achieve expected results in the chemical detection and analysis industry. The forward-looking statements are identified through use of the words "potential," "anticipate," "expect," "planned" and other words of similar meaning. These forward-looking statements may be affected by the risks and uncertainties inherent in the chemical detection and analysis industry and in the Company's business. The Company cautions readers that certain important factors may have affected and could in the future affect the Company's beliefs and expectations, and could cause the actual results to differ materially from those expressed in any forward-looking statement made by or on behalf of the Company. For a discussion of these factors, please refer to our recent filings with the Securities and Exchange Commission, including our most recent report on Form 10-KSB. The Company undertakes no obligation to update forward-looking statements to reflect events or circumstances after the date hereof.

Contact:

Electronic Sensor Technology

Frank Zuhde, 805-480-1994, ext. 135

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Source: Electronic Sensor Technology

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