| Business | Phone |
| Efs Aerospace Inc 6918 S 220th St, Kent 98032 | (253) 395-4644 |
| Moiwo Consulting Engineers 11208 Se 232nd St, Kent 98031 | (253) 856-2996 |
| Silver Knight Motokar 10623 Se 213th Ct, Kent 98031 | (206) 261-6777 |
| Staaleson Engineering 10024 Se 240th St 230, Kent 98031 | (253) 520-0388 |
| Lund Engineering Inc 1621 Central Ave S P, Kent 98032 | (253) 854-9066 |
| National Indoor Air Care Corp 1314 Central Ave S 200, Kent 98032 | (253) 850-9003 |
| Touma Engineers 6632 S 191st Pl E102, Kent 98032 | (425) 251-0665 |
| Rykels Engineering Group Inc 28301 183rd Ave Se, Kent 98042 | (253) 631-6598 |