建立了较凉的翅片管的生产部门，在宇都宫厂为扩大生产。

Established the cooler fin tube production Division in the Utsunomiya Plant for expansion of production.

youdao

建立了较凉的翅片管的生产部门，在宇都宫厂为扩大生产。

Established the cooler fin tube production Division in the Utsunomiya Plant for expansion of production.

youdao