Iron content of iron ore in Jin' an mining industry

The iron ore of Jin 'an Mining contains 40% iron. According to relevant public information, Jin 'an Mining Company is a mining company in Chinese mainland, mainly engaged in the mining and sales of mineral resources such as iron ore, coke and coal. Because there are several iron ores under Jinan Mining, the iron content of iron ores in different mines may be different. Specific data need to query the public information of mines or consulting companies. Generally speaking, the iron content of iron ore reaches 40%.