Reserves of coal, coal bed methane gas, bauxite, refractory clay, potassic rock and so on rank first in China.

煤、煤层气、铝土矿、耐火粘土、铁矾土、含钾岩石等储量居全国首位；

youdao

Reserves of coal, coal bed methane gas, bauxite, refractory clay, potassic rock and so on rank first in China.

煤、煤层气、铝土矿、耐火粘土、铁矾土、含钾岩石等储量居全国首位；

youdao