| 1.
| P Group S.R.L. |
🇮🇹 Milan, Italy |
1 |
| 2.
| P Group S.R.L. |
🇮🇹 , Italy |
1 |
| 3.
| P. Graham Dunn, Inc. |
🇺🇸 Dalton, OH, United States |
1 |
| 4.
| PG Research Co., Ltd. |
🇯🇵 Tokyo, Japan |
1 |
| 5.
| PG Research Foundation |
🇺🇸 Darien, IL, United States |
4 |
| 6.
| PG Research Foundation, Inc. |
🇺🇸 Darien, IL, United States |
2 |
| 7.
| PGR Filters, L.L.C. |
🇺🇸 Highlands, TX, United States |
1 |
| 8.
| PGR Holdings, LLC |
🇺🇸 Narrragansett, RI, United States |
2 |
| 9.
| PGR Holdings, LLC |
🇺🇸 Narragansett, RI, United States |
2 |
| 10.
| PGR-Solutions |
🇺🇸 Pittsburgh, PA, United States |
1 |