- Huettinger Electronic
- Address:UL. Marecka 47
- Atel Elektronics
- Address:UL. Oleska 121
- Almar Electronics Sp. z o.o.
- Address:UL. Opawska 3
- Retourware24
- Address:Lokietka 8a
- Valeo Electric and Electronic Systems Sp. z o.o.
- Address:UL. Bestwinska 21Czechowice-Dziedzice
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