Ōsawa Shōkai (大沢商会 or 大澤商會 in old writing) was a Japanese distributor. It distributed the Primo folders by Daiichi Kikō during the war, and the Primoflex and Primo Junior TLR cameras by Tokyo Kogaku after the war. 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). [1]