- AirVote
- American Tank Company LLC
- Armal, Inc.
- Armstrong Equipment, Inc.
- Bruder Tank
- Century Chemical Corp.
- FMI Truck Sales & Service
- Imperial Industries, Inc.
- Integrity Tank Sales & Service Inc.
- J&J Portable Sanitation Products
- KeeVac Industries
- Lane's Vacuum Tank, Inc.
- Liquid Waste Industries, Inc.
- Lock America, Inc.
- Pik Rite, Inc.
- Pinnacle Manufacturing LLC
- PolyJohn
- Portable Sanitation Association International
- Presvac Systems
- Ready2Go Trailer Sales LLC
- Robinson Vacuum Tanks Inc.
- Satellite Industries
- T.S.F. Company, Inc.
- Tank World Corp
- TankTec
- TOICO Industries
- Vacuum Tank Sales
