Hi, Anne,
The label you show in the link, was used both by Glassexport(Skloexport) and Jablonex, to show place of origin, not factory. Some pieces are marked twice, with the Bohemia Glass label and also with factory label as well, so you can find pieces marked Bohemia Glass with a Sklo Union label, Bohemia Glass with a Bohemia Glassworks label (from Podebrady)etc.
Regards,
Marcus