- replacement of faulty 2 x 7 tr scroll compressor, other spare parts i/c allied works for hpac plant at 2nd floor cdr edc san network, tape library, network room, saltlake main te bldg., saltlake kolkata (sh-repairing and servicing of hpac plant and other spare parts at 2nd floor san network, tape library, network room, cdr edc, itpc, saltlake main t.e. bldg., saltlake, ctd.

Sitc of 3 nos 7tr hpac including 4 years amc at dtc str equipment room at 1st floor te bldg. pinto road hubli sh supplying and laying of power cable ducting and associated works. i recall.

- replacement of faulty 4x 7 tr scroll compressor ,other spare parts i/c allied works for hpac plant at 2nd floor cdr edc server room saltlake main te bldg saltlake kolkata ( sh repairing and servicing of hpac plant and other spare parts at 2nd floor server room, cdr edc, itpc, saltlake main t.e. bldg., saltlake, ctd.

Sitc of 4nos 7tr microprocessor based high precision air cooled air conditioning package units for msc at 2nd floor te building mahanagar lucknow. sh dismantling of old pac units, new ducting, cabling, controlling and other associated work

Sitc of 15 x 7 tr mb hp ac air-conditioning pkg units for different sites in various circles in bsnl on pan india basis except ne, jk, an, and lakshadeep. rc. sh associated work for sitc of 3 nos 7tr mb, hpac , ac pkg unit for msc at rttc lko

Amc of duct acs installed at nrtcc maharani bagh equipment room and power room 1st floor for three years through gem.

Sitc of 4no 7tr hpac satcom bldg dtc jnr bgl. sh power extn distribution panel ducting work

Itc of 3 x 1.5 tr sac units ic power feeding arrangement and allied works at l shaped switch room, 2nd floor for cooling area reduction and shutdown of 4 x 14 tr hpac units ezbc technical bldg saltlake ctd sh itc of sac units

Itc of 3 15 tr sac units ic power feeding arrangement and allied works at l shaped switch room, 2nd floor for cooling area reduction and shutdown of 4 14 tr hpac units ezbc technical bldg saltlake ctd. sh i pdg power feeding arrangement to sac units

Sitc of 1 no. 7tr hpac and associated works for the proposed nms equipment at 2nd floor dtax bldg. trichy. sw dismantling of existing old ducts and providing new ducts other connected works of the new hpac unit