| Special Members |
| SK Lubricants Co., Ltd. |
http://www.sklubricants.com |
| GS Caltex Corp. |
http://www.gscaltex.com |
| S-Oil Corp. |
http://www.s-oil.com |
| BUHMWOO Co., Ltd. |
http://www.buhmwoo.com |
| S-Oil Total Lubricants Co., Ltd. |
http://www.s-oil-total.com |
| Shell Korea Co., Ltd. |
http://www.shell.co.kr |
| Hyundai Oilbank Co., Ltd. |
http://www.oilbank.co.kr |
| Regular Members |
| Afton Chemical Korea Corp. |
http://www.aftonchemical.com |
| BP Korea Ltd. |
http://www.bp.com |
| Chevron Oronite Korea Corp. |
http://www.chevron.com |
| Dow Chemical Co. |
http://www.dow.com |
| Infineum Korea Co., Ltd. |
http://www.infineum.com |
| Lubrizol Korea Corp. |
http://www.lubrizol.com |
| ZICOS |
http://www.zicos.co.kr |
| Daelim Co., Ltd. |
https://www.daelimchem.co.kr |
| Dong Yang Piston Co., Ltd. |
http://www.dypiston.co.kr |
| Michang Oil Ind. Co., Ltd. |
http://michang.co.kr |
| Zeus Oil |
http://zeusoil.co.kr |
| Inwoo Corp. |
http://www.inwoocorp.co.kr |
| CALS Corp. |
http://www.changam.co.kr |
| Taisung Commerce Co. |
|
| Korea Valvoline Corp. |
http://valvoline.co.kr |
| Korea Houghton Corp. |
http://www.houghton.co.kr |
| Research Members |
| KLOIA |
http://www.kloia.or.kr |
| K-Petro |
http://www.kpetro.or.kr |
| KTC |
http://www.ktc.re.kr |
| KIST |
http://www.kist.re.kr |
| KRICT |
http://www.krict.re.kr |
| Doosan Infracore Co., Ltd. |
http://www.doosaninfracore.com |
| Iljin Co., Ltd. |
http://www.iljin.com |