Gurudev Dyestuff (India) Pvt. Ltd. is a leading Manufacturer and exporter of 4.4 DI AMINO SULFANILIDE (DASA) in India established in1999. The company being first in india to aquire ISO 9001-2000 & 14001-2004 certification. The quality of our product is 100% approved in india as well as in abroad by various Manufacturers of Acid Dyes i.e Black 210 & Black 234. used in leather Dyes, woolen & Cashmilon. Click for details>>