Pennsylvania
| Company | Category | Area | Address | Web | Contact person | |
| REAL TIME PANEL MFRS | Building Materials | Pennsylvania | 6028 PENN CIR S, PITTSBURGH, Allegheny, Pennsylvania, 15206-3921, USA | - | - | - |
| Real To Reel Studios | Recording Studios | Pennsylvania | Guinea Ln, WARRINGTON, Bucks, Pennsylvania, 18976, USA | - | - | Ben Redd |
| REAL WIN WIN | Energy Conservation & Mgmt Con | Pennsylvania | 1926 ARCH ST, PHILADELPHIA, Philadelphia, Pennsylvania, 19103-1444, USA | - | - | Mark Jewell |