| Business | Phone |
| Corporate Health Management 157 Yesler Way, Seattle 98104 | (206) 625-9355 |
| Harris Biomedical 1035 Andover Park W 120, Seattle 98188 | (206) 575-4610 |
| Ihi Environmental 311 36th Ave E, Seattle 98112 | (206) 328-6697 |
| International Product Safety 4021 W Bertona St, Seattle 98199 | (206) 283-2897 |