Not an intelligent statement.
Production expansion needs more weapons grade machinery, that we all know Pakistan can't produce itself so any reports of machinery import, sat images of production sites, import of weapons grade parts like guidance, fuel etc for missiles - there are so many things associated with this industry that can't keep this shit hidden from anybody.
There was a news of expanded ammunition production and Turkish company was supplying machinery for site expansion so you can't keep anything secret, this is not a shop on some road side instead a hell of industrial work.