Which country is home to the company that pioneered the first commercial production of PAN-based carbon fiber?

Answer

Japan

The first large-scale commercial production of PAN-based carbon fiber was established in Japan. While foundational scientific research occurred in multiple Western nations, including the United States and the United Kingdom, the practical translation of these experimental fibers into a manufacturable, industrial-grade commodity was successfully executed in East Asia by Toray Industries.

Which country is home to the company that pioneered the first commercial production of PAN-based carbon fiber?
inventionMaterialcarbonfiber