Founded in 1991 as Procégaz, the company’s main activity at the time was the outsourcing of specialized labour in the Mauricie and Centre-du-Québec regions. In the early 2000s, in light of the economic situation and a profound rethinking of productivity on industrial construction sites, the company made a strategic shift that prompted it to change its name and expand its range of services. Since 2003, S3i been constantly growing and expanding its industrial project management operations across Canada, and now works entirely outside of the scope of Act R-20 (not covered by the decree). S3i is known for its global approach at competitive costs.