Dennco Electrical Contractors Limited Business Profile Contact Information ToolBox 1,518 Views 0 Testimonials Print This Listing Add To My Favourites Dennco Electrical Contractors Limited Dennco Electrical Contractors Limited, Electricians & Electrical Contractors, in Sudbury Ontario. Dennco Electrical Contractors Limited Location Sudbury, ON Address Sudbury, ON Telephone 705-670-4484 Category Electricians & Electrical Contractors Location Sudbury, ON Address Sudbury, ON Telephone 705-670-4484 Category Electricians & Electrical Contractors