| 251 | BIHAR RUBBER CO LTD - U25191WB1971PLC028055 |
| 252 | BIR PACKAGINGS PVT LTD - U25199WB1989PTC046017 |
| 253 | BIRADA ENGINERING ASSOCIATES PRIVATE LIM ITED - U25209WB1998PTC088103 |
| 254 | BISHWANATH POLYPACK PRIVATE LIMITED - U25199WB2012PTC172246 |
| 255 | BISWANATH PLASTICS PRIVATE LIMITED - U25201WB2001PTC093109 |
| 256 | BISWARUP POLYPACK PVT. LTD. - U25209WB1994PTC063781 |
| 257 | BISWAS POLYMER PRIVATE LIMITED - U25209WB2017PTC221231 |
| 258 | BISWAS RUBBER & ALLIED PRODUCTS PRIVATE LIMITED - U25203WB2010PTC151191 |
| 259 | BLESSING POLYMERS PRIVATE LIMITED - U25209WB2012PTC186055 |
| 260 | BLUE BELL POLY PIPES PVT.LTD. - U25209WB1995PTC071767 |
| 261 | BLUE DIAMOND POLYPLAST INDUSTRIES LTD - U25209WB1989PLC047652 |
| 262 | BLUEPET ROTO PRODUCTS PRIVATE LIMITED - U25209WB2011PTC167405 |
| 263 | BODRA PLASTOCHEM PRIVATE LIMITED - U25209WB2001PTC093884 |
| 264 | BOMBAY RUBBER MANUFACTURING INDUSTRIES PRIVATE LIMITED - U25200WB2015PTC207040 |
| 265 | BOSE NET WORK PRIVATE LIMITED - U25209WB2000PTC091980 |
| 266 | BOSE RUBBER PVT LTD - U25191WB1987PTC042223 |
| 267 | BOTHRA TRADING PRIVATE LIMITED - U25201WB1989PTC047985 |
| 268 | BOXY POLYMERS PVT LTD - U25209WB1996PTC080669 |
| 269 | BRIGHT PLASTICS PVT LTD - U25209WB1980PTC033115 |
| 270 | BRIJSTAR POLYMERS PRIVATE LIMITED - U25200WB2015PTC206572 |
| 271 | BRITE POLYTECH PRIVATE LIMITED - U25209WB2017PTC220015 |
| 272 | BT POLYMERS PRIVATE LIMITED - U25209WB2004PTC099234 |
| 273 | BULTHARUB RUBBERS PROCESS PVT LTD - U25191WB1989PTC046443 |
| 274 | BURLOW RUBBER INDUSTRIES PVT LTD - U25119WB1976PTC030815 |
| 275 | BURNPUR TUBES PVT. LTD. - U25191WB1994PTC061341 |