| Common | ||||
| State/Jurisdiction of | Equity | |||
| Name of Subsidiary | Incorporation | Ownership | ||
Clean Diesel Technologies Limited |
United Kingdom | 100% | ||
Clean Diesel International, LLC |
Connecticut | 100% | ||
Platinum Plus, Inc. |
Delaware | 100% | ||
Catalytic Solutions, Inc. |
California | 100% | ||
CSI Aliso, Inc. |
California | 100% | ||
Catalytic Solutions Holdings, Inc. |
Delaware | 100% | ||
Catalytic Solutions Czechia s.r.o. |
Czech Republic | 100% | ||
ECS Holdings, Inc. |
Delaware | 100% | ||
Engine Control Systems Ltd. |
Nevada | 100% | ||
Engine Control Systems Limited |
New Brunswick | 100% | ||
Engine Control Systems Europe AB |
Sweden | 100% |