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Sandin Engineering was founded by D. Willie Sandin in 2003. After relocating back to his home town, Mr. Sandin opened his own consulting engineering business to provide Mechanical and Electrical Engineering services to the Southeast Missouri / Southern Illinois  area.  We specialize in Mechanical and Electrical Designs / Construction documents for Commercial, Institutional and Industrial projects. We have a wide array of experience in both the Mechanical and Electrical areas.  These include Plumbing,  HVAC. Lighting, Electrical Power & Controls.