37 INSTALLATION AND REPAIR OF TELECOMMUNICATIONS SYSTEMS, COMPUTER, DATA AND CABLE TELEVISION SYSTEMS, AUDIO, VISUAL, ELECTRONIC IMPULSE AND CYCLYTIC IMPULSE SYSTEMS, SECURITY, ALARM AND DOOR ANSWERING SYSTEMS
42 CUSTOM DESIGN OF TELECOMMUNICATIONS SYSTEMS, COMPUTER, DATA AND CABLE TELEVISION SYSTEMS, AUDIO, VISUAL, ELECTRONIC IMPULSE AND CYCLYTIC IMPULSE SYSTEMS, SECURITY ALARM AND DOOR ANSWERING SYSTEMS
THE MARK CONSIST OF THE LETTER "TS" IN STYLIZED FORM.