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  • Richard Sumner Technology Inc. Website Contacts
    (416) 251-2523
    17-29 Connell Crt, Etobicoke, ON M8Z 5T7

    With over ten years experience in the toroid transformer industry, Mr. Sumner founded Sum(R) Design to address the engineering requirements of OEM accounts. Sum(R) Designs and Manufactures quality power transformers in the range 20VA to 2500VA. Universal primaries, multiple secondaries and isol…