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Founded in 1958 as the Society of Independent Gasoline Marketers of America (SIGMA), SIGMA has become a fixture in the motor fuel marketing industry. After more than fifty years of leadership, SIGMA is the national trade association representing the most successful, progressive, and innovative fuel marketers and chain retailers in the United States and Canada. From the outset, the association has served to further the interests of both the branded and unbranded segment of the industry while providing information and services to members. |
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