... Quality & Technical Guarantee Glyoxal 40% Cas No.107-22-2 for paper making, medicine ,coating Specification ItemSuper GradeFirst ClassChroma (Colorimetry- ... container.(2). Quality control, before shipment, free sample for test. After shipment, keep sample for 3 years(3). Prompt shipment with professional documents ... before shipment Glyoxal 40% Cas No.107-22-2 for paper making, medicine ,coating