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.
What is the relationship between 'Samsung' and 'Electronics' in the context of the input sentence.
Options: stock exchange, product/material produced, subsidiary, original broadcaster