DASDA, 4-4 Di-Amino Stilbene 2-2 Di-Sulphonic Acid,DNSDA,4-4 DI-NITRO STILBENE 2-2 DI SULPHONIC ACID,nast,NASDA,4-AMINO 4-NITRO STILBENE 2-2 DI SULPHONIC ACID,pntosa,PNTS,PARA NITRO TOLUENE ORTHO SULPHONIC ACID Mfg. & Exporters of : OBA & DYES INTERMEDIATES | An ISO 9001:2008 certified
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