We are manufacture Viscose filament yarn using Pot & Spool technology In pot technology Yarn have problem of uneven whiteness compare to spool technology. In spool technology we have CS2 recovery system while In pot technology we have not CS2 recovery because of Space & ROI not feet the same. So Please suggest Any chemical or additive which is Environment friendly & Safe in manual handling to remove CS2 from yarn during washing or before washing

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