| Business Activity Code | 423600 | Wholesale Trade: Merchant wholesalers, durable goods |
| NAICS Codes | 332618 | Other Fabricated Wire Product Manufacturing |
| 335921 | Fiber Optic Cable Manufacturing | |
| 335929 | Other Communication and Energy Wire Manufacturing | |
| 335999 | All Other Miscellaneous Electrical Equipment and Component Manufacturing | |
| 339999 | All Other Miscellaneous Manufacturing | |
| 423610 | Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers | |
| 423690 | Other Electronic Parts and Equipment Merchant Wholesalers | |
| 423430 | Computer and Computer Peripheral Equipment and Software Merchant Wholesalers | |
| 423710 | Hardware Merchant Wholesalers | |
| 423860 | Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers | |
| 444190 | Other Building Material Dealers | |
| 493190 | Other Warehousing and Storage | |
| 493110 | General Warehousing and Storage | |
| 423720 | Plumbing supply | |
| 541330 | Engineering Services | |
| ESD Codes | F-0395 | Lighting Equipment |
| F-2038 | Wire & Cable-Wholesale | |
| F-2055 | Telecommunication Products | |
| F-2233 | Safety Products | |
| G-0232 | Electrical Supplies | |
| I-2354 | Distributor-Cable & Communication Equipment | |
| SIC Codes | 3357 | Drawing and Insulating of Nonferrous Wire |
| 5063 | Electrical Apparatus and Equipment Wiring Supplies, and Construction Materials | |
| 5065 | Electronic Parts and Equipment, Not Elsewhere Classified | |
| PSC Codes | 5975 | Electrical Hardware and Supplies |
| 6010 | Fiber Optic Conductors | |
| 6015 | Fiber Optic Cables | |
| 6020 | Fiber Optic Cable Assemblies and Harnesses | |
| 6060 | Fiber Optic Interconnectors | |
| 6070 | Fiber Optic Accessories and Supplies | |
| 6080 | Fiber Optic Kits and Sets | |
| 6145 | Wire and Cable, Electrical | |
| 6625 | Electrical and Electronic Properties Measuring and Testing Instruments |
