| Compagnia | Località | Stato |
| 3M DEUTSCHLAND GMBH | NEUSS | GERMANY |
| 3M ITALY SPA | SEGRATE, MILANO | ITALY |
| 3M UNITED KINGDOM PLC | BRACKNELL | UK |
| ARAL AKTIENGESELLSCHAFT | BOCHUM | GERMANY |
| ASHLAND ITALIA S.P.A | MILANO | ITALY |
| ATOCHEM | PARIS LA DEFENSE | FRANCE |
| BASF AG | LUDWIGSHAFEN | GERMANY |
| BASF ANTWERPEN N. V. | ANTWERPEN 4 | BELGIUM |
| BASF VERNICI E INCHIOSTRI SPA | CINISELLO BALSAMO MI | ITALY |
| BITMAC LIMITED | SCUNTHORPE. | UK |
| BP CHEMICALS LTD | LONDON | UK |
| BRENNTAG AG | MUEHLHEIM A. D. RUHR | GERMANY |
| BRENNTAG CHEMIEPARTNER GMBH | MÜLHEIM | GERMANY |
| BRENNTAG SPA | MILANO | ITALY |
| CEPSA | MADRID | SPAIN |
| CHIMEN SRL | SAN DONA' DI PIAVE (VE) | ITALY |
| CHIMICA DEL FRIULI | TORVISCOSA (UDINE) | ITALY |
| COMPAÑIA ESPAÑOLA DE PETROLEOS CEPSA | MADRID | SPAIN |
| DEA MINERALOEL AG | HAMBURG | GERMANY |
| DEUTSCHE SHELL CHEMIE GMBH | ESCHBORN | GERMANY |
| DEUTSCHE SHELL CHEMIE | ESCHBORN | GERMANY |
| DOW CORNING LIMITED | BARRY, GLAMORGAN | UK |
| DSM RESINS | ZWOLLE | NETHERLANDS |
| EC ERDÖLCHEMIE GMBH | KÖLN | GERMANY |
| ENICHEM S.P.A. | MILAN | ITALY |
| ENICHEM SYNTHESIS | MILAN | ITALY |
| EXXON CHEMICAL HOLLAND BV | BOTLEK | NETHERLANDS |
| FINA-BOREALIS | ANTWERPEN | BELGIUM |
| GEBRÜDER SCHMIDT GESMBH. | WIEN | AUSTRIA |
| HALTERMANN A/S | KØGE | DENMARK |
| HUELS AG | MARL | GERMANY |
| ICI CHEMICALS & POLYMERS LIMITED | RUNCORN, CHESHIRE | UK |
| IDAS SRL | CAMPOFORMIDO | ITALY |
| INTER-CHEMOL HANDELSGESELLSCHAFT MBH | FRANKFURT AM MAIN | GERMANY |
| KUWAIT RAFFINAZIONE E CHIMICA | NAPOLI | ITALY |
| LUBRIZOL GREAT BRITAIN LIMITED | BELPER, DERBY | UK |
| MB SVEDA AB | MALMÖ | SWEDEN |
| NED.BENZOL MIJ. B.V. | RHOON | NETHERLANDS |
| NESTE OY | ESPOO | FINLAND |
| NEUBER GES.M.B.H. | WIEN | AUSTRIA |
| NORDISKA UNIPOL A.B. | STOCKHOLM | SWEDEN |
| ORLANDI VITTORIO SPA | ROSA' - VICENZA | ITALY |
| PCK RAFFINERIE GMBH SCHWEDT | SCHWEDT/ODER | GERMANY |
| PETROLEOS DE PORTUGAL - PETROGAL,S.A. | LISBOA | PORTUGAL |
| PPG INDUSTRIES | MARLY CEDEX | FRANCE |
| PRAOIL S.R.L. | ASSAGO MI | ITALY |
| REPSOL PETROLEO, S.A. | MADRID | SPAIN |
| RHEINISCHE OLEFINWERKE GMBH | WESSELING | GERMANY |
| RHONE-POULENC CHEMICALS LIMITED | WATFORD, HERTFORSHIRE | UK |
| ROHM AND HAAS | VALBONNE | FRANCE |
| RUETGERS-VFT N.V. | ZELZATE | BELGIUM |
| RUETGERSWERKE AG | DUISBURG | GERMANY |
| RUHR OEL GMBH | GELSENKIRCHEN-HASSEL | GERMANY |
| S.A.I. SOCIETA' APPROVV. INDUTRIALI SPA | PIEVE EMANUELE (MI) | ITALY |
| SÄCHSISCHE OLEFINWERKE GMBH | BÖHLEN | GERMANY |
| SHELL CHIMIE | RUEIL-MALMAISON | FRANCE |
| SHELL COMPANY (HELLAS) LTD | Ç¿ÒÑ¿ | GREECE |
| SHELL FRANCE | RUEIL MALMAISON | FRANCE |
| SHELL NEDERLAND CHEMIE B.V. | ROTTERDAM | NETHERLANDS |
| SHELL UK LIMITED, | LONDON | UK |
| SHELL UK LTD. | LONDON | UK |
| SOLUTIA EUROPE SA/NV | LOUVAIN-LA-NEUVE (SUD) | BELGIUM |
| SSAB TUNNPLÅT AB | LULEÅ | SWEDEN |
| TOTAL ESPAÑA, S.A. | MADRID | SPAIN |
| TOTAL | PARIS LA DEFENSE | FRANCE |