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The HDI-1 high-efficiency waste paper deinking agent designed and developed by the Hubei Provincial Chemical Industry Research and Design Institute has recently passed the provincial technical appraisal and has successfully entered the market. The product is suitable for the deinking of a variety of waste papers, with good operation performance, excellent deinking performance, and high whiteness of the deinking paper. Under the same conditions and other domestic and foreign deinking agent to do the contrast test, whiteness increased by 2-5 percentage points, flotation whitening effect was significantly improved by about 13 whiteness units, with less fiber loss, product performance and stability advantages.