The PDI Group of Companies (“PDI”) is a full-service corporation that provides tailored solutions for engineering, manufacturing and distribution of products and services to the commercial and industrial marketplace. Provincial Doors Inc. (“PDI”) is an installer and service provider of commercial and industrial door products and services. Established in 1988, PDI is the largest commercial and industrial door company in Ontario. With a particular focus in the installation, commissioning and service of mining ventilation doors and systems, PDI can handle the most technologically challenging surface and underground projects. Precision Door Industries (“PDI”) is a designer and manufacturer of mining ventilation doors and systems. The Company specializes in advanced engineering, design, product manufacturing, automation, and the testing and validation of mining ventilation doors and products on the global market. As a full-service manufacturer, no other competitive company can bring this suite of capabilities and experience to the market.