PERN "Przyjaźń" S.A.
Cryonorm Projects B.V.
ECO Kutno sp. z o.o.
Mostostal Płock S.A.
Mostostal Płock S.A.
Poner sp. z o.o.
Mostostal Płock S.A.
Hamworthy Gas System AS
Petro Mechanika S.A.
PROReM sp. z o.o.
Izotechnik sp. z o.o.
Rockfin sp. z o.o.
