1)    M.S.E.B.'s  Power Stations  (1A) other state owned power houses.

         2)    N.T.P.C.'s  Power Stations

         3)    Bhabha Automic Research Centre ( All the units )

         4)    All Nuclear power corporations  (Automic power stn.)

         5)    Neyveli  Lignite corporation - Tamilnadu

         6)    National Aluminium corporation,  Angul

         7)    Gujarat state fertilizers & Chemicals Ltd.

         8)    Hindustan Petroleum Ltd.

         9)    Indian Oil Corporation Ltd.

        10)   I.P.C.L. Baroda.

        11)   Tata chemicals Ltd.

        12)   Tyre Manufacturers like : MRF, CEAT, Bridgestone, Appolo, Modi, 
                 South Asia

        13)    Steel Industries like : Vishakhapattanam & Rourkela Steel Plant.

        14)    Fertilizers / Chemical /  Fibre Industries

        15)    Cement Industries

        16)    ONGC Drilling units in India.

        17)    Hindalco Industries Ltd.

        18)    Indian Institute of Geomagnetism ( Our pens are being used, during '
                  Antartica ' Expedition for the last eight years )

        19)    Paper Industries & many others.