DSD acid (4,4 diaminostilbene mono-2,2 bisulfonic acid) yog ib qho tseem ceeb dye intermediate, feem ntau yog siv los tsim cov fluorescent brighteners, ncaj khov daj G, ncaj daj R, tshav ntuj-resistant txiv kab ntxwv F3G thiab tshuaj tiv thaiv kab tsuag.COD yog 6000-8000mg / L, salinity yog 6% -8%, thiab xim ...
Nyeem ntxiv