Washington
| Company | Category | Area | Address | Web | Contact person | |
| TRI STONE CONTRACTING | Single-family House Constructi | Washington | PO BOX 127, VERADALE, Spokane, Washington, 99037-0127, USA | - | - | Geary Stone |
| TRI STRAND MEDIA | Misc Publishing | Washington | 1342 162ND LN NE, BELLEVUE, King, Washington, 98008-3532, USA | - | - | - |