| Naics index | Naics index description |
|---|---|
| 561990 | Bottle exchanges |
| 561990 | Coin pick-up services, parking meter |
| 561990 | Coupon processing services |
| 561990 | Coupon redemption services (i.e., clearinghouse) |
| 561990 | Diving services on a contract or fee basis |
| 561990 | Document shredding services |
| 561990 | Electrical meter reading services, contract |
| 561990 | Firefighting services as a commercial activity |
| 561990 | Flagging (i.e., traffic control) services |
| 561990 | Float decorating services |