Bal b/f TW$18+TW$3=TW$21 Bal c/f
https://news.ltn.com.tw/news/society/breakingnews/4915656?_gl=1*6nu5ag*_ga*QTNqZ3lweU5OOGt4S0ltSlAwOEpGbnl3eVRkRzB6bmVQRVBMc
https://m.voc.com.cn/xhn/news/202501/21609072.html
23,963KM-2KM=23,961KM