| Business Name | Phone | Address | zip code |
| Commercial Energy System | (301)620-2202 | 5744 Industry Ln | 21704 |
| Computerized Controls Company | (301)620-8800 | 1 Davis Av | 21704 |
| Waltz Bob N E Plumbing & Heating Inc | (301)662-3588 | 8098 Hillmark Court | 21704 |
| Aireco Supply Inc | (301)663-0505 | 5915 Urbana Pike Suite B | 21704 |
| McHenry Equipment Sales & Services | (301)663-4683 | 270 Interstate Court | 21704 |
| Roberts Electric Motors Inc | (301)663-5757 | 5841 Urbana Pike | 21704 |
| Applied Industrial Technologies | (301)663-6620 | 5915 Urbana Pike Suite A | 21704 |
| Capus Automation Services Inc | (301)694-0447 | 5711 Industry Lane Suite 26 | 21704 |
| Clym Environmental Services | (301)694-6000 | 5104 Pegasus Court | 21704 |
| McHenry Small Engine | (301)695-1400 | 270 Interstate Court | 21704 |
| Grainger Industrial Supply | (301)695-5063 | 5831 Buckeystown Pike | 21704 |
| Inpro Technologies | (301)698-9711 | 5104 Pegasus Court | 21704 |
| Thomas Industrial Products CO Inc | (301)831-4193 | 7311 Grove Road Suite N | 21704 |
| Colliflower Inc | (301)846-0500 | 5744 Industry Lane Suite L | 21704 |
| Evergreen Gas 'n Go | (301)620-1272 | 5608 Buckeystown Pike | 21704 |
| A B Seas Marine | (301)663-1994 | 8099 Hillmark Ct. | 21704 |
| Stup's Garage & Used Cars Inc | (301)663-6918 | 8052 Ball Road | 21704 |
| Shaw's Automotive Service | (301)694-6842 | 8096 Hillmark Court | 21704 |
| Arrow Automotive | (301)694-7667 | 5714 C-R Industry Lane | 21704 |
| A B Jones Plumbing & Heating Inc | (301)694-7792 | 5716 Industry Lane | 21704 |
| Harley-Davidson of Frederick | (301)694-8177 | 5722 Urbana Pike | 21704 |
| Import Center | (301)695-8290 | 5733 Buckeystown Pike | 21704 |
| Ryder Truck Rental-One-Way Inc | (301)695-6878 | 7315 Industry Lane | 21704 |
| Commercial Energy System | (301)620-2202 | 5744 Industry Ln | 21704 |
| Computerized Controls Company | (301)620-8800 | 1 Davis Av | 21704 |
| Waltz Bob N E Plumbing & Heating Inc | (301)662-3588 | 8098 Hillmark Court | 21704 |
| Aireco Supply Inc | (301)663-0505 | 5915 Urbana Pike Suite B | 21704 |
| McHenry Equipment Sales & Services | (301)663-4683 | 270 Interstate Court | 21704 |
| Roberts Electric Motors Inc | (301)663-5757 | 5841 Urbana Pike | 21704 |
| Applied Industrial Technologies | (301)663-6620 | 5915 Urbana Pike Suite A | 21704 |
| Capus Automation Services Inc | (301)694-0447 | 5711 Industry Lane Suite 26 | 21704 |
| Clym Environmental Services | (301)694-6000 | 5104 Pegasus Court | 21704 |
| McHenry Small Engine | (301)695-1400 | 270 Interstate Court | 21704 |
| Grainger Industrial Supply | (301)695-5063 | 5831 Buckeystown Pike | 21704 |
| Inpro Technologies | (301)698-9711 | 5104 Pegasus Court | 21704 |
| Thomas Industrial Products CO Inc | (301)831-4193 | 7311 Grove Road Suite N | 21704 |
| Colliflower Inc | (301)846-0500 | 5744 Industry Lane Suite L | 21704 |
| Evergreen Gas 'n Go | (301)620-1272 | 5608 Buckeystown Pike | 21704 |
| A B Seas Marine | (301)663-1994 | 8099 Hillmark Ct. | 21704 |
| Stup's Garage & Used Cars Inc | (301)663-6918 | 8052 Ball Road | 21704 |
You can also check out Industrial And Commercial Machinery in Frederick