A Chinese mining company has signed an agreement with the Democratic Republic of Congo state mining company Gecamines to build two factories, hoping to boost dwindling copper production by around seven times, Gecamines said Monday.

Gecamines and the China Nonferrous Metal Mining Company (CNMC) signed a non-binding memorandum of understanding on Jan. 13, Gecamines' interim director-general Jacques Kamenga told Reuters.

Negotiations were ongoing and it was unclear when a final contract might be signed, he said.

Under the initial agreement, CNMC would build factories at two existing mines in southeastern Congo, he said, that could boost the current annual output of 15,000 tonnes of refined copper by more than 100,000 tonnes.

The first factory, in the town of Kambove, would process 35,000 tonnes per year of copper cathode while the second, at the company's flagship Deziwa mine in Kolwezi, would process 80,000.

Gecamines' copper production peaked close to 500,000 tonnes annually in 1986 but has tumbled since the 1990s due to political upheaval, mismanagement and the sell-off of assets to private investors like Swiss-based Glencore and China's Zhejiang Huayou Cobalt Co, Ltd..

The company produced just 15,000 tonnes of copper in 2014 and was on track for a similar output in 2015, according to Central Bank statistics in September.

Congo is Africa's leading copper producer, having mined more than 1 million tonnes of copper cathode and concentrate in 2014.

The country's chamber of mines expects production for 2015 to dip slightly because of electricity shortages and Glencore unit Kamoto Copper Company's (KCC) 18-month production suspension, announced in September.