So...
The current Oestrogel inside the cylindrical bottle (white lid) is being manufactured by Besins in Drogenbos, Belgium. They have batch numbers starting with 7.
The old cylindrical bottle (white lid) which used to be the Oestrogel packaging had gel produced by Delpharm until the change of packaging to the conical bottle (which has always been the Oestrodose packaging).
Delpharm is a CDMO (Contract Development and Manufacturing Organisation) which had been responsible for the gel production from 2012 when it acquired the Drogenbos facility from Besins, to June 2022, when Besins acquired the facility back from Delpharm.
The Oestrogel inside the conical bottle (turquoise lid) with an orange square 🟧 has been manufactured by Delpharm in Belgium until June 2022. Batch numbers starting with 7.
The Oestrogel and Oestrodose inside the conical bottle (turquoise lid) with a green square 🟩 has been produced by Besins in Montrouge, France. Batch numbers starting with 1.
The older Oestrodose without a square was probably produced by Delpharm, but it is possible that it was produced by Besins at some point in Montrouge, France.
Besins tried to produce both Oestrogel and Oestrodose in France (green square 🟩) but apparently they couldn't cope with the demand so they have decided to buy back the Drogenbos facility, instead of paying Delpharm to manufacture them as a CDMO.
The brand names (Oestrogel and Oestrodose) are different but the gel is supposed to be the same. The difference is the manufacturer!
Gel in the conical bottle (turquoise lid):
🟩 = Besins (Batch numbers starting with 1)
🟧 = Delpharm (Batch numbers starting with 7)
Gel in the cylindrical bottle (white lid):
Batch numbers starting with 7 until June 2022 = Delpharm
Batch numbers starting with 7 after June 2022 = Besins