| BLBake- Line Group LLC | Pittsburgh | PA | Food Manufacturing311821 | — | ◇ UNVERIFIED |
| BBBalmaghie Brewery Distillery | Grove City | PA | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| BIBarco Ind | Reading | PA | Fabricated Metal Product Manufacturing332213 | — | ◇ UNVERIFIED |
| BMBardane Mfg Co/jermyn Plt | Jermyn | PA | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| BPBar-ray Products INC | Littlestown | PA | Apparel Manufacturing315250 | — | ◇ UNVERIFIED |
| BPBartash Publications | Philadelphia | PA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| BWBattery Warehouse Plus | Butler | PA | Electrical Equipment, Appliance & Component Manufacturing335911 | — | ◇ UNVERIFIED |
| BPBayer Polymers LLC | Newtown Square | PA | Chemical Manufacturing325000 | — | ◇ UNVERIFIED |
| BUBayer USA INC | Pittsburgh | PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| BMB&b Metal Finishing INC | York | PA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| BNBb Nonwovens Simpsonville INC | Lewisburg | PA | Textile Mills313230 | — | ◇ UNVERIFIED |
| BCBeacon Container Corrugated Cardboard Box Mfg Birdsboro | Birdsboro | PA | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| BABealls Auto Body | Clifton Heights | PA | Food Manufacturing311940 | — | ◇ UNVERIFIED |
| BFBeaver Falls Tubular Prodllc/beaver Falls Plt | Beaver Falls | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| BVBeaver Valley Asphalt Corp/aliquippa Plt | Aliquippa | PA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| BABechtelsville Asphalt | Bechtelsville | PA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
 Behringer Saws Inc/morgantown | Morgantown | PA | Fabricated Metal Product Manufacturing332213 | — | ◇ UNVERIFIED |
| BBBell Boy Clnr/washington | Washington | PA | Electrical Equipment, Appliance & Component Manufacturing335929 | — | ◇ UNVERIFIED |
| BEBell & Evans Plant 2 | Fredericksburg | PA | Food Manufacturing311615 | — | ◇ UNVERIFIED |
| BDBellmeade Dry Clnr | Altoona | PA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| BTBelmont Trailers LLC | Leola | PA | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| BSBender Shoe Plt | Somerset | PA | Leather and Allied Product Manufacturing316210 | — | ◇ UNVERIFIED |
| BFBendix Flight Systems Division | South Montrose | PA | Computer and Electronic Product Manufacturing334511 | — | ◇ UNVERIFIED |
| BCBerenfield Containers Inc/clarendon Plt | Clarendon | PA | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| BEBerg Electronics #2 | Clearfield | PA | Computer and Electronic Product Manufacturing334417 | — | ◇ UNVERIFIED |
| BOBerkebile Oil CO INC | Somerset | PA | Chemical Manufacturing325998 | 20-99 | ◇ UNVERIFIED |
| BPBerkley Prods CO | Akron | PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| BPBerwick Plt | Berwick | PA | Wood Product Manufacturing321992 | — | ◇ UNVERIFIED |
| BPBethlehem Pike Clnr/ambler | Ambler | PA | Petroleum and Coal Products Manufacturing324122 | — | ◇ UNVERIFIED |
| BPBethlen Printing | Ligonier | PA | Printing and Related Support Activities323119 | — | ◇ UNVERIFIED |
| BTBet Tech Intl/crows Island Blacks Run | Aliquippa | PA | Petroleum and Coal Products Manufacturing324122 | — | ◇ UNVERIFIED |
| BABeverage Air Brookville Plt | Brookville | PA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| BSBigbee Steel & Tank CO | Manheim | PA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| BVBig Valley Concrete - Mill Creek Facility | Mill Creek | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BABills Auto Body Inc/morton | Morton | PA | Food Manufacturing311991 | — | ◇ UNVERIFIED |
| BBBimbo Bakeries USA | Easton | PA | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| BBBimbo Bakeries USA Inc/capital Bakery | Harrisburg | PA | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| BBBimbo Bakeries Usa/norristown Plt | Norristown | PA | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| BJB & J Group Inc/morrisville | Morrisville | PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| BBlackcote | Liverpool | PA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| BCBlaw-knox CORP Chambersburg Facility | Chambersburg | PA | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| BEBlew Enterprises, INC | Lehighton | PA | Computer and Electronic Product Manufacturing334512 | — | ◇ UNVERIFIED |
| BCBocchino Cleaners | Ambler | PA | Petroleum and Coal Products Manufacturing324190 | — | ◇ UNVERIFIED |
| BIBoekel Ind Inc/feasterville | Feasterville | PA | Furniture and Related Product Manufacturing337127 | — | ◇ UNVERIFIED |
| BHBollman Hat Co/willow St Facility | Adamstown | PA | Apparel Manufacturing315990 | — | ◇ UNVERIFIED |
| BRBosch Rexroth CORP | Bethlehem | PA | Fabricated Metal Product Manufacturing332911 | — | ◇ UNVERIFIED |
| BSBosch Security Sys | Lancaster | PA | Computer and Electronic Product Manufacturing334220 | — | ◇ UNVERIFIED |
| BIBostik INC | Huntingdon Valley | PA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| BABowers Auto Body | Clifton Heights | PA | Food Manufacturing311941 | — | ◇ UNVERIFIED |
| BFBoyertown Foundry Co/fka Eafco | New Berlinville | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
