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  • Rowan Williams Davies & Irwin Inc. (RWDI)
    Rowan Williams Davies & Irwin Inc. (RWDI)
    (519) 823-1311
    650 Woodlawn Road West, N1K 1B8  Guelph

    Established in 1972, Rowan Williams Davies & Irwin Inc. (RWDI) is recognized internationally as a leading specialty consulting engineering firm. This unique company with over 300 employees has established a worldwide clientele that seeks its expertise for solving architectural, engineering and indu…

  • Agviro, Inc
    Agviro, Inc
    (519) 836-9727
    367 Gordon St, N1G 1X8  Guelph

    Established in 1992, AGVIRO, Inc. is a consulting and design engineering company providing services in the areas of indoor air quality, mechanical design and energy efficiency. Recently, we have expanded our expertise in design services to include landscape architecture to address the natural envir…

  • Chemisar
    Chemisar
    (519) 836-0084
    24 Corporate Ct, N1G 5G5  Guelph

    CHEMISAR is one of Canada's most reputable laboratories specializing in Air Quality Assessment, Emission Measurements and Pharmaceutical testing including elemental analysis from Pharmaceutical companies. Chemisar Laboratories is Health Canada licensed for drug testing.

  • Hy-Mark Mechanical Inc.
    Hy-Mark Mechanical Inc.
    (519) 822-6656
    5068 Whitelaw Rd RR 6, N1H 6J3  Guelph

    After a quick consultation, we will work with you to determine the ideal product for your home, comfort and air quality needs. Our unique Product Rating System will guide you through your options, while keeping you on budget. Are you looking for an Air Conditioner? The Hy-Mark Team has reviewed ma…