As a matter of interest for the list, thanks to Ronda Sewald and her
contacts, we now have a good translation from the tape box -

Lian Huan Brand [a kind of brand]

立体声        录音               磁带
stereo         [recording]     magnetic tape

广播电视部                    磁带厂
Department of Radio and Television, magnetic tape vault factory

Characters are written in Simplified Chinese, which means it probably was
not only produced but also disseminated in China.

Thanks so much Ronda!