DTCL was incorporated on the 26th day of August, 1911 under
 the Indian Companies Act VI of 1882 with the main object of
 carrying on tea business which includes, inter alia,
 cultivation, manufacturing and selling of tea. The company
 was promoted by Nawab Gulam Jabbar & family and originally
 owned one tea estate namely the Diana Tea Estate. The
 Company was taken over by the present owners i.e. the
 Singhania family of Calcutta in 1976. The Company acquired
 one more tea estate namely Baintgoorie Tea Estate from
 Duncans in 1983. The Company is now operating the above two
 tea gardens and both the tea gardens are located in the
 district of Jalpaiguri of West Bengal.  
 
 The Company has a track record of excellent industrial
 relations.  So far, the Company has not lost a single man
 hour due to labour problems. There is no ending legal
 disputes in respect of labour.  
 
 2005
 
 -Diana Tea Company has given the Bonus in the Ratio of 3:2
 
 -Company has splits its Face value of Shares from Rs 10 to Rs 2
 
 2008
 -Company has Consolidates its Face value of Shares from Rs 2 to Rs 5.