2008年，他又引进建立了绿色环保炭化厂，将棉花秸杆制成碳粉。

In 2008, Li Manchang established a Green Carbonization Factory, which makes carbon powder out of cotton straw.

youdao

2008年，他又引进建立了绿色环保炭化厂，将棉花秸杆制成碳粉。

In 2008, Li Manchang established a Green Carbonization Factory, which makes carbon powder out of cotton straw.

youdao