| IIInolex INC | Philadelphia | PA | Chemical Manufacturing325192 | — | ◇ UNVERIFIED |
| ISInternational Specialty Alloys | Edinburg | PA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| I1Iris 1 Hr Clnr Svc | Southampton | PA | Chemical Manufacturing325190 | — | ◇ UNVERIFIED |
| ILIsosciences LLC | King of Prussia | PA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| JBJ & B Blending Technologies | Mckees Rock | PA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| JCJc Cleaners | Gettysburg | PA | Chemical Manufacturing325600 | — | ◇ UNVERIFIED |
| JJJet Jack INC | Carnegie | PA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| JMJohnson Matthey INC | Conshohocken | PA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| JDJws Delavau CO | Philadelphia | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| KFKidde Fire Fighting INC | West Chester | PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| KFKoch's Farm Svc INC | Tamaqua | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| LCLannett CO | Philadelphia | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LCLannett CO | Philadelphia | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LMLawrence Mcfadden CO. | Philadelphia | PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| LALehigh Agricultural and Biological Services INC. | Hamburg | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| LILincoln Industrial Chemical CO | Reading | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| LLLinde LLC | Bethlehem | PA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| LFLiquid Fence CO | Mount Pocono | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| LELnp Engineering Plastics | Thorndale | PA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| MAM a Bruder & Sons | Philadelphia | PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| MSMace Security Intl Inc/saltsburg | Saltsburg | PA | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| MGMaitri Genetics | Pittsburgh | PA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| MFMars Fishcare INC | Chalfont | PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| MBMaster Builders Solutions US LLC | Allentown | PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| MTMatheson Tri Gas Saint Marys | Saint Marys | PA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| MIMatthews Intl Marking Products Division | Blawnox | PA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| MRMckees Rocks Transfer Station | Mc Kees Rocks | PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| MPMd Pharmaceutical Supply | Hanover | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| MSMerck Sharp & Dohme CORP | Lansdale | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| MLMesser LLC | Tobyhanna | PA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| MCMiller Chemical & Fertilizer CORP | Hanover | PA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| MSMomentive Specialty Chemicals INC Mt Jewett Facility | Mount Jewett | PA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| MDMonarch Dry Clnr/altoona | Altoona | PA | Chemical Manufacturing325312 | — | ◇ UNVERIFIED |
| MCMontgomery Chem Ltd/conshohocken | Conshohocken | PA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| MSMountain Supply and Service | Williamsport | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| NANative American Environmental Technologies INC | Greentown | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| NMNatl Milling Chemical CO | Philadelphia | PA | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| NSNatl Starch & Chem Co/hazleton | Hazleton | PA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| NINaturetech-solutions INC | Lancaster | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| NPNew Pig CORP | Tipton | PA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| NON O Bonsall & Sons | Millerstown | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| NCNuchem Corporation | Allentown | PA | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| NLNull's Liquid Chlorine, LLC | New Oxford | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| OPOttawa Plt Food, INC | Carlisle | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| PAPace Analytical Life Sciences Norristown | Norristown | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PCPaxar Corporation | Sayre | PA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| PUPelgar USA Corporation | Saylorsburg | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| PPPenn Protective Coatings | Huntingdon Valley | PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| PIPfizer Inc/w Conshohocken Plt | Conshohocken | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PMPharm Mfg Research Svc INC | Horsham | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
