The 
YKK Group is a Japanese group of manufacturing companies.  The company was founded in 
1934 by Tadao Yoshida in Higashi Nihonbashi, 
Tokyo, making zip fasteners (known as 
zips in the UJ, or 
zippers in the USA).  It was renamed to Yoshida Kogyo K.K. in 
1945 and to YKK in 1994.
 
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