Hi Howard, the quality of these primers are good. I know, the name being associated with Wolf ammo which is regarded as cheap makes a guy wonder at first. But from what I understand they are not actually made by Wolf, but only imported by them with their packaging. Yes they are made in Russia, and no they aren't corrosive.
Don't hesitate to try them. I bought a bunch of them and they shoot great in my 22-250. One thing you have to remember about these Russian primers are that they are a bit larger in diameter than our domestic primers. So make an extra effort to seat them all the way in the primer pocket and you shouldn't have any ignition problems.