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John Zehnder has rejoined CSTK Inc. as sales manager for the St. Louis MO operation. In this new role, he will direct the sale of units and aftermarket products, including such products as the Thermo King reefer, TriPac auxiliary power unit, and Go Green Hydrogen Enrichment System. Zehnder's sales team is comprised of Doug Myers, who handles Go Green, TriPac, and aftermarket products; and Dan Graham, who will handle aftermarket parts and services. Mike Ham has transitioned to operations manager.

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