One of my childhood friends works at Zildjian and has been involved in their metallurgy stuff lately (his picture is actually in the article!). From what he's a

One of my childhood friends works at Zildjian and has been involved in their metallurgy stuff lately (his picture is actually in the article!). From what he's alluded to, it sounds like they consider their trade secrets around their processes to be the main reason for their competitive advantage, and they're extremely careful about who they're shared with even internally, and the number of people who know some of them probably number only in the single digits.