19 May 2008
Wanting to know more I checked out the Wikipedia entry for the YKK Group and this is what I found out:
The initials YKK stands for Yoshida Kōgyō Kabushiki-kaisha (吉田工業株式会社) and the original company was established in 1934.
It's made up of a group of Japanese manufacturing companies. They are best known for zippers (they are the world's largest producers) but they also make fasteners, architectural products, and machinery.