House Foods Holding USA, a subsidiary of Japan-based House Foods Group, has announced the acquisition of US based Keystone Natural Holdings, described as a leading manufacturer of tofu and plant-based foods in North America. In a statement, Keystone Natural Holdings, whose brands include Nature’s Soy brand, will help House Foods to boost its portfolio of plant-based products and expand its presence in North America, increasing the factories it operates from two to eight. Chaoran …