Chicago Bridge & Iron Company (CB&I) is a global specialty engineering and construction company that designs and constructs energy infrastructure projects such as liquefied natural gas storage, petrochemical and gas processing plants, and heat transfer equipment. In addition to providing the technology used inside such facilities, the company also specializes in constructing storage tanks and other vessels. Major customers include CNOOC, Valero, Chevron, and SABIC. The company also serves other large corporations in the hydrocarbon, energy, power generation, and petrochemical industries. The US accounts for more than half of its sales.