I came across this material.And think I'd better public it to more people to know.And also I check that this haven't been posted here,so I post it here.Am I wro

I came across this material.And think I'd better public it to more people to know.And also I check that this haven't been posted here,so I post it here.Am I wrong?If so,would u pls show me out.Thank u in advanced! :)