| keystone mfg rochester pa | 1.54 | 0.5 | 6898 | 25 | 93 |
| keystone manufacturing company pa | 1.48 | 0.5 | 3453 | 33 | 71 |
| the keystone mfg co buffalo ny | 1.59 | 0.5 | 2347 | 30 | 5 |
| keystone mfg & supply | 0.27 | 0.7 | 2378 | 21 | 75 |
| keystone manufacturing co. inc | 0.5 | 0.5 | 9784 | 30 | 60 |
| keystone builders supply rochester ny | 1.03 | 0.2 | 2195 | 37 | 8 |
| keystone auto parts rochester ny | 1.95 | 0.5 | 4221 | 32 | 4 |
| keystone automotive rochester ny | 0.33 | 0.9 | 9080 | 32 | 52 |
| keystone manufacturing and supply | 1.02 | 0.9 | 4160 | 33 | 69 |
| keystone manufacturing and design | 1.84 | 0.8 | 9587 | 33 | 56 |
| keystone in chester pa | 0.84 | 0.7 | 2175 | 22 | 59 |
| keystone machine littlestown pa | 1.04 | 0.1 | 7760 | 31 | 21 |
| keystone fire apparatus pa | 0.52 | 0.9 | 7445 | 26 | 7 |
| keystone industries myerstown pa | 1.11 | 0.4 | 3728 | 32 | 95 |
| keystone fabrication mt pleasant pa | 1.49 | 0.1 | 8332 | 35 | 22 |
| keystone manufacturing & engineering inc | 1.06 | 0.4 | 1290 | 40 | 19 |
| keystone equipment new castle pa | 0.92 | 1 | 7177 | 32 | 2 |
| keystone group home pa | 0.15 | 0.8 | 5978 | 22 | 21 |
| keystone fastening wexford pa | 0.52 | 0.6 | 6135 | 29 | 57 |
| keystone machinery ephrata pa | 1.51 | 0.5 | 1088 | 29 | 12 |
| keystone metal somerset pa | 1.22 | 0.1 | 9564 | 26 | 4 |
| keystone fabricating inc bethlehem pa | 1.07 | 1 | 5554 | 37 | 88 |
| keystone machine and fab | 1.14 | 0.1 | 5715 | 24 | 2 |
