Our Service Whether it's a small problem or a large one, Pro-Master staff is always standing by to offer you prompt, worry-free response any time, all the time. Convenience and quick service is our motto. We have on board tracking devices and the most advanced computer technology so orders can be made and filled on site; aboard a fleet of nineteen fully stocked vehicles to ensure the quickest response time to any problem. Our coverage area of southern and north eastern Ontario is accessible and expanding to better meet your demands.