Give me an introduction over 200 words for AMBICA CHEMICAL & INDUSTRIAL CORPN, a chemical company in 234/3A, A.J.C. BOSE ROAD, FMC FORTUNA, 5TH FLOOR ROOM NO. A7 (II), Kolkata - 700020, West Bengal, India Write your response with exactly 5 paragraphs, separated with the markdown divider: ***.
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