China Coal Mine Shanxi Energy Group Co., Ltd. is much cheaper, is it a pit?

The coal of China Coal Mine Shanxi Energy Group Co., Ltd. is much cheaper than a pit. According to relevant public information, China Mining Shanxi Energy Group Co., Ltd. is a large coal enterprise, so it can reduce costs, improve production efficiency, and thus reduce product prices. Cheap price does not mean that the coal quality of China Mining Shanxi Energy Group Co., Ltd. is poor or fraudulent.