Industrial companies in Ontario

Prototype and low-to-mid-volume PCB assembly with component procurement and board fabrication.

Rigid, flexible and rigid-flex board fabrication, assembly and product integration.

Complex circuit board manufacturer using positive liquid photoresist and landless vias.

Canadian assembly, testing and repair for prototypes, new products and low-to-mid-volume runs.

Colt Canada, formerly Diemaco, is a Canadian small arms manufacturer based in Kitchener, Ontario. With over 40 years of experience, the company is known as Canada's Centre of Excellence for Small Arms, supplying rifles, carbines, machine-guns, and grenade launchers to military and law enforcement clients.

Family-owned PCB manufacturer offering quick-turn prototypes and turnkey projects.

DuPont Canada: materials and technology solutions for water, healthcare and industry.

Component-level repair, reverse engineering and specialized manufacturing for mission-critical electronics.

Industrial group whose FTG Circuits business fabricates PCBs for aerospace, defence and space.

General Dynamics Land Systems Canada designs, engineers, and sustains advanced tracked and wheeled combat vehicles and integrated technologies for global defense forces.

GH Precision Products Inc. manufactures custom components in Mississauga, Ontario, through CNC machining, screw machining, fabrication and assembly.

IMT Precision, located in Ingersoll, Ontario, is the advanced CNC machining division of the IMT Group. The company specializes in precision manufacturing for demanding industries such as Defence, Aerospace, and Oil & Gas. Its capabilities include CNC machining, custom forging, heat treating, and assembly, supported by integrated production facilities in Canada and the U.S.

Labatt: brews beer and produces beverages for the Canadian market.

Lactalis Canada is the Canadian business of the Lactalis dairy group, not the entire global organization.

Lallemand is a privately held Canadian group specializing in the development, production and marketing of microorganisms and their derivatives.

Lockheed Martin Canada is the Canadian subsidiary of Lockheed Martin Corporation, headquartered in Ottawa. Its activities include software engineering, systems integration, manufacturing, training and sustainment for defence and aerospace.

Design, prototypes, assembly and board inspection with consigned or turnkey solutions.

Megatel CNC Solutions Inc. supplies machine tools and technical support. Its Mississauga, Ontario office is listed here as a distributor, not as the manufacturer of the machines it sells.

Messer Canada is the Canadian affiliate of the Messer Group, the world's largest privately held industrial and medical gases specialist. Operating across Canada from its Ontario headquarters and regional facilities, Messer Canada produces and distributes oxygen, nitrogen, argon, carbon dioxide, hydrogen, acetylene and a wide range of high-purity specialty gas mixtures. The company serves the oil and gas, metallurgy, food and beverage, welding, healthcare, electronics and chemicals sectors via bulk deliveries, cylinder supply or on-site production units installed directly at customer sites. Recognized for its world-class safety standards, logistics reliability and expertise in complex industrial applications, Messer Canada acts as a strategic partner for operators looking to optimize their processes, energy consumption and carbon footprint through tailored industrial gas solutions — from heavy industry to specialty laboratories — at meaningful scale across the country.

Layout, bare-board procurement, assembly, testing and electromechanical integration.

Pearson Manufacturing Ltd., in Mississauga, coordinates B2B manufacturing projects: each request is reviewed by a person and fulfilled in-house or by an authorized partner depending on the project.

Turnkey PCBA, inspection and final integration in North York.

Electronic development, contract manufacturing and after-sales support in Mississauga.

Markham EMS partner for assembled boards, box builds, wiring and logistics.