Pennsylvania
| Company | Category | Area | Address | Web | Contact person | |
| MASTERWORK-STERNBERGERS | Wallpapers & Wallcoverings-Ret | Pennsylvania | 3307 WASHINGTON RD, MC MURRAY, Washington, Pennsylvania, 15317-6400, USA | - | - | E Sawders |
| MASTERY GROUP EAST | Training Consultants | Pennsylvania | 331 RIDLEY CREEK LN, WEST CHESTER, Chester, Pennsylvania, 19380-6667, USA | - | - | - |