Electronic Sensor Technology Receives Additional Order from Leading Chinese Research Institute for zNose; Company Continues Rapid Penetration of Multi-billion dollar Chinese market.

NEWBURY PARK, Calif. -- Electronic Sensor Technology, Inc. (OTCBB: ESNR), a leading provider of innovative Homeland Security solutions, announced today that it has received an additional order from Beijing R&D Technology, based in China, for zNose(R), its electronic sensor device that can capture and analyze nearly any odor, fragrance, or chemical vapor within ten seconds. The order marks the second that the Company has received from the Chinese company in the last two weeks and the fifth overall in the last seven months, and follows several trial orders for environmental and homeland security applications.

"Our relationship continues to grow with Beijing R&D as it recognizes the broad applications for the zNose in security and environmental areas," stated Matthew S. Collier, President of Electronic Sensor Technology, "The security market in China is still in its infancy and the reorders by our Chinese partner reflect the growing need for the product in the country. We believe that China will ultimately prove to be one of the most lucrative markets for the product."

Additional information about how zNose(R) can be used as pre-screening tool for the environmental applications can be obtained by downloading the following technical paper from the company's website:

http://www.znose.com/download/AWMA-2005.pdf

About Electronic Sensor Technology:

Founded in 1995, Electronic Sensor Technology has developed and patented a chemical vapor analysis process. We believe that the Company's product line is positioned to eliminate key vulnerabilities in the homeland security market, specifically in maritime port, airport, and border security applications.

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.