Hi Michael,
The Rollei films are manufactured by Maco, and some of them used to be sold under the Maco label; however, they are not all the same: Rollei IR400 is completely different to the old Maco IR820c which is now sold as Efke IR820. All of the films are premium quality and original German productions. The Maco brand has now been replaced by Rollei and any Maco-branded products are older packagings.
For more information about Rollei IR400 infrared film, please have a look at our independent product tests:
www.digitaltruth.com/store/product_tests/infrared_film_001.php
We will be publishing additional data on Rollei Pan25 and Ortho25 soon, but in the meantime, this analysis of Pan25 might be useful:
www.digitaltruth.com/store/product_tests/slow_film_001.php