(1) - Repair and maintenance of electrical and electronic equipment and instruments, electric power converters, electrical relays and transformers, power distribution panels, and electrical power generators
(2) - Electrical and electronic equipment and instruments; electric power converters; electrical relays and transformers; power distribution panels
(3) - Calibration of electrical and electronic equipment and instruments; retail sale and rental of electrical and electronic apparatus and instruments, electric power converters, electrical relays and transformers, power distribution panels, and electrical power generators
(4) - Electrical and electronic equipment and instruments; electric power converters; electrical relays and transformers; power distribution panels
(5) - Repair and maintenance of electrical and electronic equipment and instruments, electric power converters, electrical relays and transformers, power distribution panels, and electrical power generators
(6) - Calibration of electrical and electronic equipment and instruments; retail sale and rental of electrical and electronic apparatus and instruments, electric power converters, electrical relays and transformers, power distribution panels, and electrical power generators
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