ONPA - production of the studio of the same name in Bangkok (Thailand) at the former TDK plant, mid-80s. Since the mid-90s, the same plant has been producing TDK SA series cassettes.

Image Brand Manufacturer Model Description Type Length Year Made in Market
Compact Cassette ONPA MA-X 46 Type IV Metal 1990 Thailand ONPA ONPA Stereo Co. MA-X - Type IV Metal 46 1990 Thailand
Compact Cassette ONPA MA-X 60 Type IV Metal 1990 Thailand ONPA ONPA Stereo Co. MA-X - Type IV Metal 60 1990 Thailand