Established by ethnic Chinese businessmen Ang Hock Liem and Tjoa Ma Tjoen in 1940, it produced seven black-and-white films before it was dissolved in 1942; all are thought to be lost.

Following the commercial successes of Terang Boelan (Full Moon; 1937), Fatima (1938), and Alang-Alang (Grass; 1939), the film industry of the Dutch East Indies – which had been severely weakened by the Great Depression – was revived.

Following a young couple who face off against criminals with the help of a masked bandit,[4] this film was directed by Jo An Djan and starred Oedjang, Fatimah, and Basoeki Resobowo.

[7] Following these positive reviews, Union hired Saeroen – who had previously written Terang Boelan and several works for Tan's Film – as a screenwriter.

The film, in which a young man convinces a miserly hajji to be more charitable, was released in October 1940 and starred the singer Soelastri and martial artist Zonder.

[17] In July 1941 Union released Wanita dan Satria, a Djoewariah vehicle which follows a well-born womaniser who abuses his social status to gain women's trust before ultimately getting his comeuppance.

[18] In advertising Wanita dan Satria, the company again emphasised the non-theatrical background of the film's cast, which also included Moesa, Djoewita and Hidajat.

[21] Hu remained with Union and directed the company's next production, Soeara Berbisa, with peranakan sound technician Boen Kin Nam serving as assistant director.

[23] Others had careers behind the screen; Kedok Ketawa star Basoeki Resobowo, for instance, became art director on films such as Darah dan Doa (The Long March; 1950).