| Business | Phone |
| Comm Tech Research 661 N Plano Rd, Richardson 75081 | (972) 690-5255 |
| Contemporary Research Press Richardson 75081 | (972) 690-5882 |
| Lam Research Corp 801 E Campbell Rd 475, Richardson 75081 | (972) 619-4200 |
| Research System Solutions 1902 Hanover Dr, Richardson 75081 | (972) 231-6704 |