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McCain Foods Limited is an international leader in the frozen food industry and the world’s largest manufacturer of frozen potato specialities, employing approximately 18,000 people and operating 50 production facilities on six continents.

McCain Foods Canada offers a range of snack products under the brand name McCain Marché

McCain Produce grows and sells seed potatoes globally. The company also sells table potatoes in Canada

In 1967, Canada welcomed the first McDonald's restaurant to Richmond, British Columbia. Today, McDonald's Restaurants of Canada Limited has become part of the Canadian fabric, serving more than one million guests every day.

McGill University is consistently ranked as one of the top universities, both nationally and internationally. It is a world-renowned institution of higher learning with research activities spanning three campuses.

McGowan Rice company is involved in the construction of food processing facilities, packaging facilities, potato and produce storage buildings, across the US and Canada.

McGrath, Byron + Sons is a potato grower from New Brunswick, Canada.

McKinney Enterprises Ltd. specializes in growing a range of certified seed potatoes, offering varieties such as Kennebec, Russet Norkotah, Yukon Gold, and more. They focus on quality and certification standards.

McLean, R.H. Farms is a potato grower from New Brunswick, Canada.

Meadow Ridge Enterprises Ltd. is a seed potato grower from Saskatchewan, Canada.

Meridian Manufacturing Inc. is a proven leader in quality storage and handling products for both agriculture and industry as well as the oil, gas and mining sectors.

Mexican Corn Products is a Canadian company producing tortilla chips branded "Los Cantores".

Mid-Isle Farms Inc operates potato storage and potato packing facilities on Prince Edward Island and is jointly owned by seven shareholder farms.

The Minnesota Certified Seed Potato Growers Association is a trustworthy organization headquartered in East Grand Forks, Minnesota. They specialize in producing and distributing high-quality seed potatoes for agricultural use.

Modern Plant-Based Foods is a food company based in Vancouver, Canada that offers a range of plant-based food products and services including meat alternatives, homemade style soups, vegan cheese, sauces, and candies.

Monaghan Export Ltd (Monaghan Farms Ltd) is an exporter and grower of chip processing and chip seed potatoes. They have been exporting for over 20 years and have been supplying Frito Lay locally since 1987.

Monteith, Danny is a potato grower from New Brunswick, Canada.

Moreau, Albert Jr. & Eric is a potato grower from New Brunswick, Canada.