| EA | EC | ED | EE | EF | EG | EL | EM | EN | EO | EP | EQ | ER | ES | ET | EU | EV | EX | EY |
| Index entry | NAICS Code | U.S. NAICS Title |
|---|---|---|
| Effervescent salts manufacturing | 325412 | Pharmaceutical Preparation Manufacturing |
| Efficiency management (i.e., efficiency expert) consulting services | 541614 | Process, Physical Distribution, and Logistics Consulting Services |
| EA | EC | ED | EE | EF | EG | EL | EM | EN | EO | EP | EQ | ER | ES | ET | EU | EV | EX | EY |