71 Downing Blvd., Thornhill, ON

835 Harrington Crt., Burlington, ON

2185 Derry Rd W, Mississauga, ON

17-29 Connell Crt, Etobicoke, ON

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 ...

601 Gordon Baker Rd., North York, ON

150-334 Churchill Ave N, Ottawa, ON