CHINA
Introduced by People's Republic of China from the late 1970s, and still widely used.
Examples with stars or other emblems on the front are also found.
There was a GK80B, that may no longer be in use. It was (is) more rounded - said by Marzetti to resemble the Italian M33 - and with a distinctly shorter visor. Note the length of this on the A model.
Marzetti states that variants with a single - rather than A-type chinstrap - also exist.