EXHIBIT 2.1 PURCHASE AND SALE AGREEMENT BY AND BETWEEN HY-BON ENGINEERING COMPANY, INC. AND NGE LEASING, INC. THIS PURCHASE AND SALE AGREEMENT is made at Midland, Midland County, Texas, on February 28, 2003 but effective January 1, 2003 between HY-BON...Purchase and Sale Agreement • March 6th, 2003 • Natural Gas Services Group Inc • Oil & gas field services, nec • Texas
