| Acme-Hardesty Company | www.acme-hardesty.com | 314-16 | 52401 |
| ADEKA USA Corporation | www.adekausa.com | 910 | 64651 |
| Advanced Chemical Concepts Inc. | www.advancedchemicalconcepts.com | 506 | 59709 |
| Agilent Technologies | www.agilent.com | 817 | 79106 |
| American Refining Group, Inc. | www.amref.com | 712 | 61721 |
| AnalytiChem | www.analytichem.com | 811 | 81643 |
| Anton Paar USA | www.anton-paar.com | 812 | 58376 |
| Applied Rigaku Technologies | www.rigakuedxrf.com | 317 | 76335 |
| Ashland | http://www.ashland.com | 807 | 85507 |
| Ayalytical Instruments | www.ayalytical.com | 100-02 | 63505 |
| Barentz | www.barentz-na.com | 905 | 79312 |
| BASF Corporation | www.basf.com/fuel-lubricant-solutions | 211-13 | 70619 |
| Bruker | www.bruker.com/nano | 903 | 57176 |
| Cannon Instrument Company | www.cannoninstrument.com | 507 | 63507 |
| Cargill US | www.cargill.com | 410-12 | 33200 |
| Carpenter Company | http://www.carpenter.com | 115-17 | 81405 |
| Chemformation | | 914 | 86437 |
| Chevron Phillips Chemical Company | www.synfluid.com | 607 | 58625 |
| Colonial Chemical Inc. | www.colonialchem.com | 900-02 | 38456 |
| Compass Instruments | www.compass-instruments.com | 700 | 50463 |
| Connect Chemicals | www.connectchemicals.com/en | 913 | 84826 |
| CRS Reprocessing Solutions | | 815 | 86815 |
| DC Scientific | www.dcscientific.com | 912 | 46655 |
| Dover Chemical Corporation | www.doverchem.com | 107 | 33161 |
| Dow | www.dow.com | 106 | 33124 |
| Ducom | www.ducom.com | 805 | 53625 |
| ECH America | www.ech.de | 813 | 83091 |
| Emery Oleochemicals | www.emeryoleo.com | 514-16 | 61516 |
| EnginSoft USA | | 114 | 86949 |
| Ergon, Inc. | www.ergonnsa.com | 601-03 | 64326 |
| Evonik Oil Additives USA, Inc. | www.evonik.com/oil-additives | 301 | 33266 |
| ExxonMobil Product Solutions | www.exxonmobilchemical.com | 101 | 45651 |
| Falex Corporation | www.falex.com | 702 | 33178 |
| FedChem/ Federal Process | www.kolate.com | 616 | 59618 |
| Functional Products, Inc. | www.functionalproducts.com | 606 | 38582 |
| Green Oleo Spa SB. | https://www.greenoleo.com | 803 | 83031 |
| Huntsman | www.huntsman.com | 614 | 38980 |
| IMCD US | www.imcdus.com | 610-12 | 71093 |
| Indo Amines Americas | www.indoaminesamericas.com | 915 | 85449 |
| INDUSTRIAL QUIMICA LASEM S.A.U | www.iql-nog.com | 111-13 | 63514 |
| INEOS Oligomers | www.ineos.com | 415-17 | 50357 |
| Italmatch Chemicals | www.elcocorp.com | 611-13 | 33169 |
| Ivanhoe Industries, Inc. | www.ivanhoeind.com | 808 | 49021 |
| Kao Chemicals Europe, S.L.U. | www.kaochemicals-eu.com | 312 | 67342 |
| KH Neochem Americas, Inc. | www.khneochem.com | 517 | 51039 |
| King Industries, Inc. | www.kingindustries.com | 510-12 | 33210 |
| KLK Temix S.P.A. | www.temixoleo.com | 615-17 | 67283 |
| Koehler Instrument Company Inc. | www.koehlerinstrument.com | 307 | 33188 |
| Kuraray America Inc. | http://www.kuraray.us.com | 806 | 84540 |
| LANXESS Corporation | www.lanxess.com | 411-13 | 33295 |
| LGC Standards | www.vhglabs.com/ | 816 | 65018 |
| Lumar Quimica | | 706 | 86938 |
| MidContinental Chemical Company, Inc. | www.mcchemical.com | 311-13 | 72008 |
| Momentive | https://www.momentive.com | 814 | 85806 |
| MUNZING | www.munzing.com | 306 | 33277 |
| Napoleon Engineering Services | www.nesbearings.com | 605 | 63519 |
| Nelson Brothers | www.nbspecchem.com | 710 | 82983 |
| NexTec Group | | 917 | 86817 |
| Norac Additives | www.noracadditives.com | 407 | 84384 |
| Optimol Instruments Pruftechnik GmbH | www.optimol-instruments.de | 704 | 38992 |
| Palmer Holland Inc. | www.palmerholland.com | 210-12 | 33180 |
| PCS Instruments | www.pcs-instruments.com | 414-16 | 32864 |
| Phoenix Tribology Ltd. | www.phoenix-tribology.com | 110 | 63520 |
| Pilot Chemical Company | www.pilotchemical.com | 801 | 33242 |
| Polyrheo USA Inc. / Neatsfoot Oil Refine | https://www.neatsfootoil.com | 909 | 85127 |
| Quimica Liposoluble | www.quimicaliposoluble.com | 904 | 57062 |
| Radom Corp | www.radomcorp.com | 908 | 83454 |
| Ravago Chemicals North America | na.RavagoChemicals.com | 401 | 33204 |
| Rierden Chemical & Trading | www.rierdenchemical.com | 810 | 82963 |
| RTEC-Instruments, Inc. | www.rtec-instruments.com | 214 | 80965 |
| Sasol Chemicals | www.chemicals.sasol.com | 901 | 63450 |
| Savant Labs | www.savantgroup.com | 217 | 39001 |
| SBZ Corporation | www.sbzcorporation.com | 916 | 75176 |
| Sea-Land Chemical Company | www.sealandchem.com | 310 | 33253 |
| SI Group | www.siigroup.com | 515 | 81478 |
| Soltex, Inc. | www.soltexinc.com | 206 | 55189 |
| Songwon International - Americas Inc. | www.songwon.com | 315 | 69627 |
| Sunshield Chemicals Ltd. | www.sunshieldchemicals.com | 714-16 | 86792 |
| Tannas/King | www.tannasking.com | 215 | 61948 |
| The Lubrizol Corporation | www.lubrizol.com | 511-13 | 33184 |
| TotalEnergies Lubricants | www.totalenergies.com | 907 | 52610 |
| TriboDENS Ltd | tribodens.com | 919 | 85525 |
| Tulstar Products Inc | www.tulstar.com | 906 | 67276 |
| United Protective Technologies | https://www.upt-usa.com | 809 | 84065 |
| United Soybean Board | www.soynewuses.org | 911 | 65913 |
| Univar Solutions | www.univarsolutions.com | 201 | 59737 |
| Vanderbilt Chemicals, LLC | www.vanderbiltchemicals.com | 406 | 33285 |
| VBASE Oil Company | www.vbaseoil.com | 207 | 77803 |
| Wincom Inc. | www.wincom-inc.com | 216 | 49629 |
| Zschimmer & Schwarz | www.ZSLubes.com | 501 | 33203 |