2343 Manufacture of ceramic insulators and insulating fittings

23431033 Ceramic electrical insulators (excluding with metallic parts) 23431035 Ceramic electrical insulators for overhead power transmission or traction lines (including with metallic parts) (excluding lightning arresters) 23431039 Ceramic electrical insulators (including with metallic parts) (excluding for overhead power transmission or traction lines, lightning arresters) 23431053 Ceramic insulating fittings for electrical machines, appliances or equipment/ containing >= 80 % by weight of metallic oxides 23431055 Ceramic insulating fittings for electrical machines, appliances or equipment (excluding fittings containing >= 80% by weight of metallic oxides)