PKN Orlen S.A.

Petroleum refinery

Organika Sarzyna S.A.

Chemical products manufacurer

Organika Jaworzno S.A.

Chemical products manufacturer

Organika Zachem S.A.

Chemical products manufacturer

Zakłady Azotowe Puławy S.A.

Fertilisers & chemical products manufacturer

Zakłady Azotowe Włocławek S.A. (currently Anwil S.A.)

Fertilisers & chemical products manufacturer

Zakłady Azotowe w Kędzierzynie S.A.

Fertilisers & chemical products manufacturer