Does it lie flat in the cassettes or does it behave erratically? If it's not flat like a table your pictures will not be sharp. That sounds like fun. Not.
Your guess is correct, that's how they work: they purchase big surplus rolls and get them cut. Efke and other companies do the cutting and spooling for them.
Maco has no production facilities at all. It's an owner-managed family business with a storehouse and the hyperbole of a marketing department. Talking about 'How many film
factories?' they are off topic, like warehouse-branded or Freestyle-labeled Kodak and Fuji films.
Njet. They are in a village named Stapelfeld near Hamburg, Germany, an hour's drive from my home.
Probably it was remaining stock from Agfa and not from Efke - at that time. The next batch with a new fancy name might be made in China, Rochester or Papua New Guinea. Don't forget that Efke makes old-school film and wants old-school treatment. If you treat it like modern film you will be disappointed, no doubt.
Now, let's talk about factories again.
We forgot a japanese manufacturer: Konishiroku alias Konica. They had a product range named Sakura. Quality equaled Fuji and Kodak, sales did not.
There must have been some others around in Japan before Fuji absorbed or killed them all:
http://neco.mediacat-blog.jp/c2299_3.html
I can recall there were more film factories in eastern Europe, but I don't remember all the names. There was Tasma and Swema in the Soviet Union and Orwo in East Germany and Forte in Hungary but there were a few more, probably they were so bad that nobody will miss them.
And wasn't there a Kodak factory in Russia many years ago?