2. ELECTRONIC EQUIPMENTS PROTECTION WITH NON LINEAL PROTECTORS AND WITH HYBRID CONFIGURATION IN CASCADE TO DRAIN TRANSITORY AVERAGE DISCHARGES.

3. SENSITIVE EQUIPMENTS PROTECTION WITH DISTANCE MONITORING FOR BOS-SOULÉ SYSTEM - MADE IN FRACE BY CIRCUITO PÁRA-RAIOS.

4. CALCULATION OF RESISTANCE AND POTENTIAL OF ELECTRIC LEVELLED IN TWO LAYERS WITH COMPUTATIONAL PROGRAM.

5. REPORTS AND TECHNICAL DECISION OF RESISTANCE OF EARTH AND RESISTANCE OF THE SOIL, FOR PROJECTS OF MESH OF LEVELLED.

6. ASSEMBLY OF TORRES AUTO CARRIED AND ESTAIADAS FOR SYSTEM OF COMUNICATIONS VHF, UHF, TELECOMMUNICATIONS, LIGHTNING ROD, TV FOR SIGNATURE, MICROWAVES AND REPEATERS UP TO 122 METERS OF HEIGHT.

7. PROJECTS OF MESH OF EARTH WITH EQUALISATION OF POTENTIAL. AND EXOTHERMIC WELDING.

8. COURSES AND TRAINING OF PROTECTION AGAINST ATMOSPHERIC DISCHARGES, LEVELLING AND ELECTRIC PROTECTION.