My iphone 4s has some chinese/korean letters on the back instead of the usual symbols?

I purchased a new iphone 4s sim free unlocked 32 gigs, and on the back panel it has the usual apple logo, Iphone, then designed by Apple in California and then some asian symbols, and then there's a logo something like IC
and then KCC-CMM-APA-A1387.
I bought it new, it works perfect( it is original) but why is the back panel different from the other iphones?

It's probably bootleg

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