A miner works underground at a mining zone in Jinchang, northwest China's Gansu Province, Feb. 11, 2021. (Xinhua/Du Zheyu)

Naipu Mining Machinery Co., Ltd. (Naipu Mining, 300818.SZ) has recently signed a sales contract of more than 30 million U.S. dollars with Erdenet Mining Corporation, a large Mongolian mining group, reported Shanghai Securities News Monday quoting the company.

According to the company's announcement, Naipu Mining will provide Erdenet Mining Corporation with related supplies and engineering services for the expansion of an autogenous grinding plant.

From 2020 to 2022, the total business between Naipu Mining and Erdenet Mining Corporation exceeded 730 million yuan.