Seagull (海鸥 = hǎi ōu = seagull) is a Chinese brand. Under it was sold from the 60s by various companies from the region around Shanghai. The best known are certainly the medium format cameras of the brand from China. These include the Seagull 203 and the Seagull 4 series. But there were also 35mm cameras, such as the Seagull 205 and the 35mm DF-SLR family.
Seagull
An overview of cameras from Seagull, China.