Main:0713.03.4 "Technical maintenance of power plants and networks" 0713.03.02.4 "Maintenance of substations"
With 0714.01.4 "Testing of electrical devices, machines and devices" 0714.01.01.4 "Tester of electrical devices, machines and devices"
Forward 0214.01.4 "Jewellery" 0214.01.02.4 "Producer of semi-precious and precious stones"