A2 Milk's managing director and chief executive Jayne Hrdlicka said the partnership with Walmart added "opportunity and growth" to the company's US expansion.
The company had already announced a major expansion in the US market into the northeast, making products available in New York, New Jersey, Connecticut, Massachusetts, Delaware, Pennsylvania and Rhode Island.
In addition to Walmart, a2 Milk is available at Wegmans, Stop & Shop, Giant Carlisle, Giant Landover, Whole Foods Market, Market Basket, Sprouts, Safeway, King Soopers, Target, Ralphs, Publix, ShopRite and The Fresh Market.
Dual-listed a2 Milk, which offers an a1 beta protein-free alternative milk, this month reported a 116 per cent lift in net profit to $195.7 million for the June year.
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