National companies

Czech Road Society – Road tunnels division
Czech company for illumination (CCI) - For ELTODO EG delegated only to TNK no.76
Public lighting development company(PLDC)
Czech Society for Quality
Moravian and Silesian industrial companies partnership, Na Obvodu 1085, 703 00 Ostrava 3
Electro-technical guild, region Ostrava, Kollárova 3/1005, Ostrava-Mar. Hory
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