Because in China, workers are capable of a lot. They are also cheaper than Korean labor or wages being produced faster, saving time. People make a lot of people easily .
Because in China there is talented workers are numerous. It is labor that Korea has a cheaper wage or be produced quickly to save time, make good people person.
because there is in the country's labor force, which can be a lot of labor and also as a cheaper Korean or wages are manufactured at a lot of time-saving, easy-to-sort of