Have you every wondered why the initials YKK are stamped on most zippers?
That's because today most zippers are made by a Japanese company founded in 1934 called YKK, the largest manufacturer of zippers originally called Yoshida Kogyo Kabushikikaisha after the company's founder.
YKK has over 205 zipper factories in 68 different countries around the world. Their largest factory is in the state of Georgia, USA which produces more than 7 million zippers per day. Photo Credit: Morguefile