Actually China made brand new SKS' well into the 90's to fit our American market. These "clones" of type 56 were cheap and flooded the states in great numbers. What killed production was the Bush/Clinton import bans. China no longer needed to produce them since their #1 market had shut the doors.
Canada and New Zealand get all their left overs now especially their m21's which are pretty much BNIB Cloned type 56s. If the ban ever gets lifted who knows...but it is all wishful thinking.