Diamond Shamrock Ref & Marketing

Diamond Shamrock Refining & Marketing, a part of Valero Energy Corporation, is recognized as the largest independent petroleum refiner globally and a leading renewable fuels producer in North America. The company is committed to providing high-quality fuels and environmentally responsible refining operations while prioritizing safety and community engagement.

Valero emphasizes innovation and ingenuity in advancing the future of energy, focusing on reliable, affordable, and sustainable solutions. With a culture that supports diversity, inclusion, and employee growth, Diamond Shamrock Refining & Marketing positions itself as an outstanding corporate citizen and a favorable employer in the energy industry.

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