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 Technical Principle For Supercritical Fluid Extraction 

 The principle for supercritical CO2 fluid extraction (SFE) separation process is that supercritical CO2 fluid is separated from substances to be separated to selectively extract effective ingredient in sequences under the supercritical state. Then, supercritical fluid is turn into common gas by the means of pressure reduction and temperature rising so that extracted substance is completely or basically separated out to achieve separation and purification. Therefore, the supercritical CO2 fluid extraction process includes the extraction and separation process.

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