200-181 Bay St., Toronto, ON

Producers & exporters of copper, zinc, lead, gold, silver, selenium, tellurium, zinc & molybdenite concentrates, fluorspar, bismuth, phosphate etc.

1400-20 Toronto St, Toronto, ON

176-365 Roncesvalles Ave., Toronto, ON

215-260 Adelaide St. E., Toronto, ON

ONTA makes different kinds of hydrocarbon fossil fuel (coal and oil) sets for education in energy, science, chemistry and geology.

24 McGee St, Toronto, ON