Letka in the Mazandaran dialect means a small, green garden next to the house. In the villages of Mazandaran, in addition to the courtyard space, great importance is also given to the greenery and greenery around the house, and according to taste, small and large gardens are created and, by planting flowers and vegetables, an eye-catching view is created around the entrance door and the outer walls of the house. The beautiful name of these small, common gardens in Mazandaran inspired the owners of the collection in the late 90s, and the margarine products of the North Agriculture and Industry Collection were born with this brand in these years (1999).