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In the air filtration industry, there are numerous standards for classifying, identifying, and evaluating the various performance characteristics of air filters.

At the same time, to support the selection of energy-efficient air filters, EUROVENT (the European Association of Manufacturers of Refrigeration, Air Conditioning and Heat Pumping Equipment) developed the "Eurovent 4/11" guidelines in 2012 and upgraded it in 2015. The guideline is based on the EN 779:2012 standard for energy consumption calculation and is classified according to energy consumption. This tool enables us to select high-efficiency filters based on the standard and ensure lower energy consumption, providing the best solution for users.