Ontario is the largest province in Canada in terms of populations and economy scale, with leading advantages in auto manufacturing, nuclear technology, transportation, aerospace, telecommunications, mining, finance, education and environmental protection industry.

There are over 2400 companies/institutes engaged in environmental protection in Ontario, enjoying advanced technologies in waste water treatment and air pollution control. The output of environmental protection industry in Ontario amounts to 40% of total output in this industry in Canada.

The Ontario Beijing Representative Office was officially opened in April, 2008, aiming to promote exchanges and cooperation between Ontario and China at both business and government level.