| Company | Category | Area | Address | Web | E-mail | Contact person |
| SUNDOWN STABLES | Stables | Pennsylvania | 215 BEAUFORT RD, NEW FLORENCE, Westmoreland, Pennsylvania, 15944-2204, USA |
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M W Pilgram |
| SUNDOWNER INC | Building Materials | Pennsylvania | 1330 UNION MEETING RD, BLUE BELL, Montgomery, Pennsylvania, 19422-1918, USA |
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Carolyn Taylor |
| SUNDSTRAND SERVICE CORP | Engineers-Aeronautical | Pennsylvania | 217 EXECUTIVE DR STE 104, CRANBERRY TWP, Butler, Pennsylvania, 16066-6411, USA |
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Jim Belt |
| SUNDWIG | Engineers | Pennsylvania | 125 TECHNOLOGY DR STE 100, CANONSBURG, Washington, Pennsylvania, 15317-9557, USA |
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Edgar Braun |
