| 661 | Electronic Relays | Company Product |
| 662 | Electronic Remote Controllers | Company Product |
| 663 | Electronic Research & Development | Company Product |
| 664 | Electronic Scales | Company Product |
| 665 | Electronic Scoreboards | Company Product |
| 666 | Electronic Scrap Disposal | Company Product |
| 667 | Electronic Scraps | Company Product |
| 668 | Electronic Screwdriver | Company Product |
| 669 | Electronic Soft Starters | Company Product |
| 670 | Electronic Spirit Level | Company Product |
| 671 | Electronic Starter | Company Product |
| 672 | Electronic Stereo Generators | Company Product |
| 673 | Electronic Sweep Generators | Company Product |
| 674 | Electronic Switches | Company Product |
| 675 | Electronic Synthesizers | Company Product |
| 676 | Electronic Table Tape Dispensers | Company Product |
| 677 | Electronic Tape Dispensers | Company Product |
| 678 | Electronic Television Component Pattern Generators | Company Product |
| 679 | Electronic Test Handlers | Company Product |
| 680 | Electronic Testing Equipment | Company Product |
| 681 | Electronic Time Recorded Machines | Company Product |
| 682 | Electronic Time Recorder Machines | Company Product |
| 683 | Electronic Timers | Company Product |
| 684 | Electronic Tools | Company Product |
| 685 | Electronic Torque Wrench | Company Product |
| 686 | Electronic Trainers | Company Product |
| 687 | Electronic Trimmers | Company Product |
| 688 | Electronic Typewriters | Company Product |
| 689 | Electronic Uhf Generators | Company Product |
| 690 | Electronic Variable Speed Drives | Company Product |