John F. Hartner

Dover Technologies, Inc. was engaged in printed circuit board industry .It manufactured printed circuit test, assembly equipment, marking and imaging equipment. The company was headquartered in Tustin, CA.

Dover Engineered Systems, Inc. manufactures process control instruments. It also offers engineering services for the process control systems. The company was founded in 1955 and is headquartered in Downers Grove, IL.

The ExOne Co. engages in the development, manufacture, and marketing of three-dimensional (3D) printing machines. It offers 3D printing solutions to industrial customers in the aerospace, automotive, heavy equipment, energy, and oil and gas industries. The company was founded in 1995 and is headquartered in North Huntingdon, PA.

EnvisionTEC, Inc. manufactures desktop and full-production 3D printers and materials. It offers CDLM printer, desktop, perfactory, 3SP, and accessories. The company was founded by Ali A El Siblani in November 2002 and is headquartered in Dearborn, MI.

Digital Industrialist LLC advises and invests in digital manufacturing businesses. The private company is based in West Palm Beach, FL. The company was founded by John F. Hartner.

Azul 3D, Inc. operates as a 3D printing company that allows users to print 3D structures from a wide pallet of materials. The company was founded by James Hedrick, David Walker and Chad A. Mirkin and is headquartered in Skokie, IL.

The Additive Manufacturer Green Trade Association (AMGTA) was founded in 2019 with the aim of understanding and promoting the environmental benefits of additive manufacturing across the economy. The private company is based in Hollywood, FL. The AMGTA's members represent the entire manufacturing spectrum, from design and raw materials to end products and users, and are focused on innovating better, more sustainable, and financially advantageous products through best additive practices. The CEO is Sherry Handel.