Trump tariffs leave Japan manufacturers in Thailand, Vietnam scrambling

TOKYO -- U.S. President Donald Trump's reciprocal tariffs have undermined the "China plus one" offshoring strategy used by many Japanese manufacturers, as high duties on countries like Vietnam and Thailand make them less viable as production bases.

Casio Computer makes calculators in Thailand, musical instruments in China, and watches in both countries that are shipped to the U.S., a division that had helped keep its supply chain stable. That may change with the tariffs announced Wednesday by Trump, which include a 36% levy on imports from Thailand and 34% on China.