K.K. Ōsawa Shōkai (株式会社大沢商会 or 株式會社大澤商會 in old writing) was a Japanese distributor. It distributed the Primo folders by Daiichi Kikō during the war. After the war, it also distributed the Primoflex and Primo Junior TLR cameras by Tokyo Kogaku.[1] It was probably the owner of the "Primo" trademark.
Its address in 1942 and 1943 was Tōkyō, Ginza, 42, 5 (東京・銀座・四二ノ五). [2]