The new sponsorship is a welcome boost for the society, which ended its financial year with a deficit of £5,761 - compared to a surplus of more than £5,000 the year before.
The loss comes after the show lost its two main supermarket sponsors, Sainsbury's and Tesco.
New chairman of the society Sarah Calcutt, who was elected into her role last month at the MFSS annual general meeting, said: "We are very pleased to have these companies on board. Both have an enormous amount to give to the show. They are already giving us advice on how to promote the industry and the show."
Calcutt has replaced former chairman Jeremy Scott, who gave a summary of last year's events at the meeting before stepping down from the role.
He said: "My job as chairman has been made easier by all the general committee members, society members, stewards, friends and pressed men who assist the society in everything it does, and I thank you for your help and the time you generously give."