COLLOIDAL___________HAVE_A_DISADVANTAGE_THAT_IT‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•S_HARD_TO_REPRODUCE_THE_METHOD_FROM_OPERATOR_TO_OPERATOR_WITHOUT_MECHANIZATION_OF_THE_SYSTEM.?$#

• A. Titration
• B. Sulfonication
• C. Burning
• D. Delignification