| Sadro, s.r.o. |
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| STAV MAT IN s.r.o. |
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| EKOS PLUS, s.r.o. |
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| Alu König Frank Stahl Slovensko, s.r.o. |
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| Ing. Ján Šestina SETA |
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| Koll-2-Koll, Marián Kollár |
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| Prefabrikát, a.s. |
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| Intas Slovakia, s.r.o. |
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| Tehelňa STOVA, spol. s r.o. |
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| Promi Slovakia, s.r.o. |
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| Plastokno s.r.o. |
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| OK plast |
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| CHEMOLAK a.s. |