The Mexican government will invite four firms to bid on the construction of an $8 billion refinery for state oil company Pemex, officials said Monday, as President Andres Manuel Lopez Obrador seeks to fast-track one of his signature projects.  To be built near the Dos Bocas port on Mexico’s southern Gulf coast, it would be Pemex’s seventh domestic refinery and is intended to help wean the country off growing fuel imports, a major campaign promise of Lopez Obrador, who took office in December. “The companies we are calling upon for the Dos Bocas refinery are the best in the world,” said Lopez Obrador during a news conference flanked by his energy minister and Pemex chief executive, but without revealing the selected companies. Firms […]