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7.1981 : Bhutan operation closed and entire plant and machinery there were given to Govt. Of Bhutan. And started construction of a new facility in Rampur at Bahadurganj after closing Mint Crop distillation facility there. At the same time, a small Menthol manufacturing facility were also opened in Delhi to fill the gap till new facility was going to operational at Rampur.
8.1982 : All Mint Crop distillation facilities became obsolete, hence closed. New Facility for Menthol manufacturing at Rampur became operational for 600 mtons of Menthol annually. New Fractionation Column installed for 300 mtons capacity of Peppermint Oil.
9.1984 : Plant capacity further enhanced to 1200 mtons annually. Capacity for Fractionation Distillation also increased.
10.1987 : Plant capacity further enhanced to 1900 mtons annually. Capacity for Fractionation distillation further increased.
11.1990 : Whole Menthol Manufacturing process changed and New Most Advanced technology was implemented at Rampur, making total capacity to produce Menthol at 2200 mtons annually. Similarly, New Technology for Fractionation Distillation implement with increase in capacity.
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