PDVSA Petroleos, S.A.
CHEVRON
SIMCO
K.K.P, C.A. (Kellogg Panamerican, C.A.)
Consorcio Tecpetrol Coparex Cms Nomeco Venezuela
CAMSA
PETROZUATA
ABB Asea Brown Boveri S.A.
Foster Wheeler Caribe Corporation, C.A.
Carbones del Guasare, S.A.
Petroregional del Lago
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