https://pressroom.prlog.org/astoria/ About Groupe Astoria - Groupe Astoria is a CSSA Canada certified green commercial cleaning contractor company servicing the areas of Montreal, Laval, South Shore and Quebec City. https://www.prlog.org/11408114-groupe-astoria-montreal-commercial-cleaning-company-becomes-quebecs-1st-cssa-green-contractor.html Groupe Astoria, a pioneer in the use of Green Cleaning best practices, became the first commercial cleaning company in Quebec to achieve the CSSA's (Canadian Sanitation Supply Association) “Canadian Green Sustainability Contractor” certificate.Thu, 02 Jun 2011 18:08:35 GMT