YASH DYES and INTERMEDIATES Address: Plot No : 797/2, 2nd Phase, GIDC, Vapi-396195, Gujarat, India Contact Person: Manufacturer and Supplier of Acid And Chemicals, Dyes Intermediates, Bulk Drug And Fine Chemicals : 4-NAPSA (Free Acid) (4-Nitro-2-Aminophenol-2- Sulfonic Acid), PNAOSA (Para Nitro Aniline Ortho Sulphonic Acid), 4-NAPSA (Na-Salt) (4-Nitro-2-Aminophenol-2- Sulfonic Acid), PNCB0SA (4-Nitro 4'-Amino Diphenyl Amine 2-Sulfonic Acid (Pre. F.C. Acid)