Although it plans to keep selling mobile devices in China, Samsung no longer intends to make them in the same country. This move is thought to have been taken in order to cut costs, and also due to overwhelming competition from other OEMs such as Huawei. The South Korean company will transfer production to other nations such as Vietnam in the future.
https://www.notebookcheck.net/Samsung-closes-the-last-of-its-Chinese-smartphone-manufacturing-facilities.436875.0.html