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Pagină nouă: Pagina dedicata companiei PetroChina Co Ltd listata cu simbolul US.PTR ==Descriere companie== PetroChina Company Limited (http://www.petrochina.com.cn/) is a China-based company principally engaged in the production and distribution of oil and gas. The Company mainly operates through four business segments. The Exploration and Production segment is principally engaged in the exploration, development, production and sales of crude oil and natural gas. The Refining and Chemica...