| 631 | Electronic Identification Systems | Company Product |
| 632 | Electronic Instrument Printer | Company Product |
| 633 | Electronic Instrument Printers | Company Product |
| 634 | Electronic Instruments | Company Product |
| 635 | Electronic Locks | Company Product |
| 636 | Electronic Measuring Instrument Rental | Company Product |
| 637 | Electronic Measuring Instruments | Company Product |
| 638 | Electronic Message Display Terminals | Company Product |
| 639 | Electronic Meters | Company Product |
| 640 | Electronic Microscopes | Company Product |
| 641 | Electronic Motor Contactors | Company Product |
| 642 | Electronic Motor Starters | Company Product |
| 643 | Electronic Motors | Company Product |
| 644 | Electronic Noise Generators | Company Product |
| 645 | Electronic Parts Assemblers | Company Product |
| 646 | Electronic Parts Storage Cabinets | Company Product |
| 647 | Electronic Pgt Tape Dispensers | Company Product |
| 648 | Electronic Pliers | Company Product |
| 649 | Electronic Power Supply Units | Company Product |
| 650 | Electronic Pressure Sensors | Company Product |
| 651 | Electronic Pressure Switches | Company Product |
| 652 | Electronic Products | Company Product |
| 653 | Electronic Publishers | Company Product |
| 654 | Electronic Pulse Counters | Company Product |
| 655 | Electronic Pulse Generators | Company Product |
| 656 | Electronic Pulse Meters | Company Product |
| 657 | Electronic Pump Controller | Company Product |
| 658 | Electronic Queue Numbering Systems | Company Product |
| 659 | Electronic RF Generators | Company Product |
| 660 | Electronic Relays | Company Product |