- Fitzpatrick (54)
- Quadro Engineering (30)
- FitzMill (21)
- Union Process (15)
- Rietz (15)
- Urschel Laboratories, Inc. (15)
- Fluid Air (12)
- Greerco (12)
- Prater (6)
- Across International (6)
- Colorado Mill Equipment, LLC (6)
- Fluid Energy Processing and Equipment Company (6)
- Cornell (3)
- Keith Machinery Corp (3)
- Paul O. Abbe (3)
- CB Mills (3)
- Hosokawa Bepex GmbH (3)
- Fryma (3)
- NETZSCH Vakumix GmbH (3)
- Key International, Inc. (3)
- Patterson Kelley (3)
- Stokes (3)
- J.H. Day (Littleford Day, Inc.) (3)
- Meadows Mills, Inc. (3)
- Packint Chocolate Equipment (3)
- NETZSCH Food & Confectionary (3)
- Okuma (3)
- Theory Application Service (3)
- Hosokawa Micron Powder Systems (3)
- Modern Process Equipment, Inc. (3)
- Alpine (3)
- Bauermeister (3)