![Maria Concepción Ortuño Sierra](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Maria Concepción Ortuño Sierra, formerly worked as a Secretary & Senior Manager-Legal Affairs at Cementos Portland Valderrivas SA, Assistant Secretary at Cementos Alfa SA, Assistant Secretary at Uniland Cementera SA, and Secretary at DS Smith Spain SA.
| Empresas | Cargo | Fin |
|---|---|---|
| PAPELES Y CARTONES DE EUROPA SA | Secretario Corporativo | - |
Cementos Alfa SA
 Cementos Alfa SA Construction MaterialsNon-Energy Minerals Produces and distributes concrete, cement and mortar | Corporate Officer/Principal | - |
| CEMENTOS PORTLAND VALDERRIVAS SA | Public Communications Contact | - |
Uniland Cementera SA
 Uniland Cementera SA Construction MaterialsNon-Energy Minerals Manufactures & distributes cement | Corporate Officer/Principal | - |
Activas
Inactivas
Empresas cotizadas
Empresas privadas
| Empresas privadas | 4 |
|---|---|
Cementos Portland Valderrivas SA
 Cementos Portland Valderrivas SA Construction MaterialsNon-Energy Minerals Engages in cement and building materials manufacturing and has interests in real estate & financial services | Non-Energy Minerals |
DS Smith Spain SA
 DS Smith Spain SA Pulp & PaperProcess Industries Manufactures paper and cardboard products for packaging systems | Process Industries |
Cementos Alfa SA
Cementos Alfa SA Construction MaterialsNon-Energy Minerals Produces and distributes concrete, cement and mortar | Non-Energy Minerals |
Uniland Cementera SA
Uniland Cementera SA Construction MaterialsNon-Energy Minerals Manufactures & distributes cement | Non-Energy Minerals |
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