Gelest Inc., Morrisville, Pennsylvania, announced that Dr. Barry Arkles has been appointed Chief Executive Officer.

Specialty chemicals provider MFG Chemical has hired Joe Dymecki to the position of Director of Sales.

Gulf Coast Chemical has hired Dylan Eling for inside sales and sales support for the Florida and Southeast territories.

Chroma Color Corp. has appointed Mike Crosby to Vice President and General Manager of its Epolin business unit.

Jason Morrey has joined Linetec as a Safety Manager.

Gelest announced that Dr. Jonathan Goff has been promoted to the role of Chief Technology Officer.

Dorthe Scherling Nielsen has joined Hempel to lead the company's ambitious sustainability work as Head of Sustainability and Government Affairs.

Chromaflo Technologies, Ashtabula, Ohio, has hired an Innovation and Technology Team Leader.

Maroon Group has named Alex Reichert as the company's new Operations Manager for its Lincoln, Rhode Island, facility supporting its rapidly growing CARE Vertical.

Axalta Coating Systems Ltd. announced that Executive Vice President Steve Markevich will be leaving Axalta, having successfully led the Global Transportation Coatings business since 2013 and overseen the Greater China region since 2016.