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4500 Thanksgiving Tower
1601 Elm Street, Suite 4500
Dallas, Texas 75201
Phone: 214-969-5401
Fax: 214-969-5411
Email: info@nsai-petro.com
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1200 Four Houston Center
1221 Lamar, Suite 1200
Houston, Texas 77010
Phone: 713-654-4950
Fax: 713-654-4951
Email: info@nsai-petro.com
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