I don't even know what companies import them, much less make them. There don't seem to be too many scope companies that actually own a scope factory.
I do know that most scope companies, especially the ones selling less expensive scopes, change manufacturers the way I change socks - they might start off having a model made in Japan, then the Philippines, then Thailand and then move production to China.
About all we can do is check the box for country of manufacture and hope for the best.
John