| Business | Phone |
| Raytech Corp 821 N 2nd St, Phoenix 85004 | (602) 955-5480 |
| Datum Design Drafting Inc 2602 E Magnolia St, Phoenix 85034 | (602) 286-6596 |
| Duo Product Design 132 S Central Ave # 1, Phoenix 85004 | (602) 238-9660 |
| Griffin Design Assoc 3737 E Kent Dr, Phoenix 85044 | (480) 759-5288 |