As a drummer, I believe the title of this article is a little misleading. Such a title better represent cymbal factories that are located in Istanbul that use centuries old manufacturing processes.
Although Zildjian is undeniably iconic, the same could be said about Bosphorus Cymbals and a few other companies I won't name.
Has the title changed since you posted this comment? It's not clear to me why "a 400-year-old cymbal-making company in Massachusetts" would have to imply that the processes are 400 years old, or that the company was always located in Massachusetts, or that there aren't any other old cymbal companies elsewhere.
Missing context in the comment you replied to is that hand made cymbal companies in Istanbul can all be traced back to the old Zildjian factory there
Here I found a news story in English summarizing the situation [1]:
> The Zildjian company moved to the United States in 1929, while Avedis III moved the Zildjian factory to Quincy, Massachusetts, and then to its current location in nearby Norwell for Zildjian’s 350th anniversary.
> ... As one arm of the Zildjian family was building a huge brand in the U.S., those who remained in Turkey continued making cymbals until 1978, when Mikael Zildjian died.
> Tamdeğer said he felt desperate after his master’s death. Following two years of jewelry business in Kuwait, he re-founded the old business with his former colleague, Agop Tomurcuk, another Turkish-Armenian.
Although Zildjian is undeniably iconic, the same could be said about Bosphorus Cymbals and a few other companies I won't name.