Chai Chun, India’s leading tea boutique, based out of West Bengal, announced the 100 per cent acquisition of Darjeeling-based Okayti Tea Estate. Chai Chun, a unit of Evergreen Group, is one of the largest tea producers in India, with an annual production of 15 million kilograms CTC teas. Recently, in association with Indian Railways, Chai Chun launched a Train Tea Cafe” at Asansol Railway Junction, which is set up quite fascinatingly, within a train bogie…