None of the world's top memory chip manufacturers are based in China although South Korea's SK Hynix has a plant in Wuxi and Samsung Electronics Co Ltd , the global market leader also from South Korea, last year began full-scale production at a new NAND chip factory in Xi'an.
Take context from the input text and decide on the accurate relationship between 'Samsung' and 'Electronics' from the options provided.
Options: original broadcaster, product/material produced, stock exchange, subsidiary