I think the main point is, does the memory work as stated in relation to the speed, timing values, and correct voltages.
With Xmp memory mode enabled, and when inserted into a free memory slot of your motherboard.
Kingston and many other memory module companies sell there modules from country to country.
Most of the memory chips used or fabricated fitted to each memory module are manufactured in China anyway.
So it is highly unlikely it is fake if you payed the going price for the capacity, size of the memory stick and the type of DDR ram it has on board the memory stick.
China is used for assembly of electronics or devices.
The raw components used may not of been manufactured in China for example to do with the memory chips them...