Year
| Bronze up to $249
| Silver $250 - $749
| Gold $750 - $1,499
| Platinum
$1,500 +
|
2023
| | - W.R. Meadows, Inc.
- Producers Chemical Co.
|
|
- Polynt Composites USA Inc.
|
2020
| | - Producers Chemical Co.
- W.R. Meadows Inc.
- Selee Advanced Ceramics
- Ebco Inc.
| - Elgiloy Speciality Metals - Elgin
- Olon Industries Inc.
| - Polynt Composites USA Inc.
|
2019
| | - W. R. Meadows,
- Selee Advanced Ceramics
- Producers Chemical Co.,
- National Metalwares, L.P.
- Ebco, Inc.
| - CMC Elgiloy Specialty Metals - Hampshire,
- CMC Elgiloy Specialty Metals - Elgin,
- Olon Industries
| - Polynt Composites USA, Inc.
|
2018
| - Custom Pak Illinois, Inc.
- Weldstar
| - Producers Chemical
- RMC Rochester Midland Corporation
- Selee Advanced Ceramics
- W.R. Meadows
| - Electro-Max, Inc.
- CMC Elgiloy Specialty Metals - Hampshire
- CMC Elgiloy Specialty Metals - Elgin
- Olon Industries, Inc.,
| - Polynt Composites USA, Inc.
|
2017
| - Custom Pak Illinois, Inc.
- W.R. Meadows
- Parent Petroleum
- Fiberbasin, Inc.
| - Dodge Chemical Co.
- Engineered Ceramics
- VVF Illinois Service
- Flinn Scientific
- Producers Chemical
| - Butterfield Color
- Electro-Max, Inc.
- Elgiloy Specialty Metals - Hampshire,
- Elgiloy Specialty Metals - Elgin
| - Polynt Composites USA, Inc.
|
