| 1 | Associated Toolings India Private Limited | 1552890467 | Balitikuri, Kalitala,Howrah-711 113 711113 Howrah Howrah Sadar | View Certificate Validity |
| 2 | Bonzar Boilers | 1552555765 | 55 , Chanditala Main Road 700053 Kolkata Kolkata | View Certificate Validity |
| 3 | Bostin Engineers Pvt Ltd | 1551618233 | DAW Building, 2nd Floor, 184, Lenin Sarani, Kolkata 700013 Kolkata Kolkata | View Certificate Validity |
| 4 | BTL EPC LIMITED Formerly BENGAL TOOLS LIMITED | 1526562537 | 2,JESSORE ROAD, DUM DUM 700028 North 24 Parganas Barrackpore | View Certificate Validity |
| 5 | Classic Electrodes India Ltd | 1553239335 | 1A Bonfield Lane 700001 Kolkata Kolkata | View Certificate Validity |
| 6 | CT BOILER PVT. LTD. | 1552768637 | A-165, SURVEY PARK, KOLKATA 700075 Kolkata Kolkata | View Certificate Validity |
| 7 | Diamond Flanges And Fittings Private Limited | 1611411439 | 31A/3, Mahendra Bhattacharjee Road,
711104 Howrah Howrah Sadar | View Certificate Validity |
| 8 | ENCON ENTERPRISES PVT. LTD. | 1526949244 | 24, SURYA SEN STREET,
KOLKATA-700009 700009 Kolkata Kolkata | View Certificate Validity |
| 9 | Energy Services | 1635685215 | 25 Dr. Lalit Banerjee Sarani, 1st Floor 700073 Kolkata Kolkata | View Certificate Validity |
| 10 | FLOWTEC | 1553848460 | 33 S P MUKHERJEE ROAD 700025 Kolkata Kolkata | View Certificate Validity |
| 11 | FLUIDTECH EQUIPMENT PRIVATE LIMITED | 1552277429 | Office and Unit 1 87/4, MAKARDAH ROAD, HOWRAH-711101, WB. INDIA 711101 Howrah Howrah Sadar | View Certificate Validity |
| 12 | GEE Limited | 1499642653 | Sankrail Industrial Park, NH-6 Kanduah, Sankrail 711302 Howrah | View Certificate Validity |
| 13 | GEE Limited | 1556427793 | 135A BIPLABI RASH BEHARI BASU ROAD, 2nd FLOOR, KOLKATA-700001, WEST BENGAL 700001 Kolkata Kolkata | View Certificate Validity |
| 14 | GE POWER INDIA LIMITED DURGAPUR | 1552867333 | GE POWER INDIA LIMITED,
DR. ZAKIR HUSSAIN AVENUE,
DURGAPUR
713206 Paschim Bardhaman Durgapur | View Certificate Validity |
| 15 | Grain Processing Industries India Pvt Ltd | 1552150868 | 29 Strand Road 700001 Kolkata Kolkata | View Certificate Validity |
| 16 | Grain Processing Industries (I) Pvt. Ltd. | 1499676009 | 29, Strand Road 700001 Kolkata | View Certificate Validity |
| 17 | Hi-Tech Systems And Services Ltd. | 1552484887 | White House
119 Park Street
Kolkata - 700 016
West Bengal
India 700016 Kolkata Kolkata | View Certificate Validity |
| 18 | Hi-Tech Systems And Services Ltd. | 1656690685 | White House
119 Park Street
Kolkata - 700 016
West Bengal
India 700016 Kolkata Kolkata | View Certificate Validity |
| 19 | HYDROTECH ENGINEERING COMPANY | 1553941885 | 5/1,FAKIR PARA ROAD ,BEHALA,KOLKATA 700034 Kolkata Kolkata | View Certificate Validity |
| 20 | Industrial Instrumentation | 1499336959 | North Ramchandrapur, Pubali Garden Narendrapur 700103 Kolkata | View Certificate Validity |
| 21 | Jas Equipment and Engineers Pvt. Ltd. | 1499257766 | Durgapur Industrial Estste Durgapur 713212 Paschim Bardhaman Durgapur | View Certificate Validity |
| 22 | Levcon Instruments Private Limited | 1538836135 | 13 CAMAC STREET,KOLKATA-700017 700017 Kolkata Kolkata | View Certificate Validity |
| 23 | LEVCON VALVES PVT LTD | 1553018163 | Rajkamal, 6th Floor, 13 Camac Street, Kolkata 700017 700017 Kolkata Kolkata | View Certificate Validity |
| 24 | M.S.Fittings Manufacturing Co. Pvt. Ltd. | 1499245925 | 17, Weston Street 700013 Kolkata Kolkata | View Certificate Validity |
| 25 | Multitech Boilers Pvt Ltd | 1514302002 | 12A, Kalibari Lane
Jadavpur
700032 Kolkata Kolkata | View Certificate Validity |
| 26 | N. L. Hazra and Son | 1554528542 | Arupara, G.I.P Colony, Howrah 711112 Howrah Howrah Sadar | View Certificate Validity |
| 27 | North Technoprojects India Pvt. Ltd. | 1499876632 | 3/8, Uday Sankar Bithi City Centre, Durgapur 713216 Paschim Bardhaman Durgapur | View Certificate Validity |
| 28 | Par Enterprises Pvt Ltd | 1553902134 | 41 C Chaulpatty Road, Kolkata 700010 700010 Kolkata Kolkata | View Certificate Validity |
| 29 | PRIME THERMALS PVT. LTD. | 1551865172 | P-214 CIT ROAD 700010 Kolkata Kolkata | View Certificate Validity |
| 30 | Rohini Iron & Steel | 1499594039 | 2, R.N.Tagore Road Kolkata 700076 | View Certificate Validity |
| 31 | R S ENGINEERING | 1605655915 | Block_A, Sanjib Sarani,
Durgapur - 713201 713201 Paschim Bardhaman Durgapur | View Certificate Validity |
| 32 | SB FINAL TEST AGAIN | 1554421119 | Office Address 787878 Cooch Behar Dinhata | View Certificate Validity |
| 33 | Shieldarc Equipment Pvt. Ltd | 1726326951 | 58/4 . N.S Road Liluah 711204 Howrah Howrah Sadar | View Certificate Validity |
| 34 | Standard Equipments Private Ltd. | 1500132949 | D /18, Tangra Industrial Estate 25 and 27 Canal South Road 700015 Kolkata Kolkata | View Certificate Validity |
| 35 | STEEL PRODUCTS INDIA | 1556394789 | 317-A/5, B B Chatterjee Road 700042 Kolkata Kolkata | View Certificate Validity |
| 36 | Thermal Associate Pvt. Ltd. | 1499358657 | 55, Chowringhee Road, 2nd Flooor Unit-32 700071 Kolkata | View Certificate Validity |
| 37 | THERMAL ASSOCIATE PVT LTD | 1526787027 | 55,CHOWRINGHEE ROAD, 2ND FLOOR,UNIT-32,KOL-71 700071 Kolkata Kolkata | View Certificate Validity |
| 38 | THERMAL ASSOCIATE PVT LTD | 1528629243 | 55, CHOWRINGHEE ROAD, CHOWRINGHEE COURTH, 2ND FLOOR, UNIT - 32, KOLKATA, PIN - 700071 700071 Kolkata Kolkata | View Certificate Validity |
| 39 | Thermotech Engineering | 1669634230 | 35/2A Sarsuna Main Road 700061 Kolkata Kolkata | View Certificate Validity |
| 40 | UNICONTROLS INSTRUMENTS PRIVATE LIMITED | 1605329680 | 22/S, SREENATH MUKHERJEE LANE 700030 Kolkata Kolkata | View Certificate Validity |
| 41 | Vikshi Boilers Pvt. Ltd | 1552720256 | Bonderbill , T N Mukherjee Road , Punjabi Para , Dankuni 712311 Hooghly Serampore | View Certificate Validity |
