| Business | Phone |
| Accurate Laboratories Inc 2067 Warren Rd, Cleveland 44107 | (216) 685-9819 |
| Ameri Path 7730 First Pl, Cleveland 44146 | (440) 786-9762 |
| American Testing Co 5475 Perkins Rd, Cleveland 44146 | (440) 786-1403 |
| Beta Laboratory & Technical 6670 Beta Dr, Cleveland 44143 | (440) 604-9802 |
| Xri Testing 5403 E Schaaf Rd, Cleveland 44131 | (216) 642-0100 |
| Underwriters Laboratories Inc 31513 Carlton Dr, Cleveland 44140 | (440) 610-3753 |
| Csa Intl 8501 E Pleasant Valley Rd, Cleveland 44131 | (216) 524-4990 |
| Tracer Technologies Intl Inc 26800 Fargo Ave # B, Cleveland 44146 | (216) 464-9300 |
| Twin Analytical Ltd 6801 Brecksville Rd # 100, Cleveland 44131 | (216) 834-8946 |
| D & B Water Testing Lab Po Box 40751, Cleveland 44145 | (440) 331-9223 |
| Daniel T Clancy & Assoc 5827 Alberta Dr, Cleveland 44124 | (440) 461-0720 |
| Tensile Testing Metallurgical 7815 Harvard Ave, Cleveland 44105 | (216) 641-3290 |
| Stork-Herron Testing Labs Inc 5405 E Schaaf Rd, Cleveland 44131 | (216) 524-1450 |
| Experior Testing Network 6000 Lombardo Ctr # 220, Cleveland 44131 | (216) 642-7369 |
| Smith Electronics Inc 8200 Snowville Rd, Cleveland 44141 | (440) 526-4386 |
| Severn Trent Labs Cleveland 44105 | (216) 429-3443 |
| Predict Technologies 9555 Rockside Rd, Cleveland 44125 | (216) 642-3223 |
| Preferred Diagnostic Svc 7575 Northcliff Ave # 401, Cleveland 44144 | (216) 749-7736 |
| Progress Services Inc 13948 Progress Pkwy, Cleveland 44133 | (440) 237-1811 |
| Orbit Industries 6840 Lake Abrams Dr, Cleveland 44130 | (440) 243-3311 |
| Marshfield Laboratories 15473 Neo Pkwy, Cleveland 44128 | (216) 475-6601 |
| Materials Evaluation Bureau 7809 Harvard Ave, Cleveland 44105 | (216) 341-8096 |
| Mc Gaw Technology Inc 17439 Lake Ave, Cleveland 44107 | (216) 521-3490 |