Jinchang

Jinchang has only 430,500 residents, but one local company ranks second in global nickel output and fourth in cobalt. That means a desert city in Gansu sits deep inside the battery, stainless-steel, and strategic-metals supply chain.

Officially, Jinchang is a prefecture-level city at 1,553 metres on the Hexi Corridor. What its overview pages understate is that the city was effectively built to convert one ore body into national strategic capacity. Gansu statistics put the city's resident population at 430,500 in 2024, far above the stale GeoNames baseline of 228,561, but still tiny relative to the industrial reach concentrated there.

Jinchuan Group says its headquarters in Jinchang sits atop the world's third-largest sulfide copper-nickel deposit. In the 1960s the group built China's first nickel-cobalt-platinum-group metal production line there, ending the country's shortage of nickel and cobalt. Today the company says it has capacity for 230,000 tonnes of nickel, 17,000 tonnes of cobalt, 1.1 million tonnes of copper, and operations in more than 30 countries. That is the Wikipedia gap. Jinchang is not just a mining city; it is a state-backed metallurgical organ whose output feeds batteries, chemicals, aerospace, and industrial alloys. When Beijing wants more battery materials or greater metal security, decisions in Jinchang matter.

Biologically, Jinchang behaves like lichen on bare rock. Lichen colonizes hostile mineral surfaces and, through slow symbiosis, turns them into the basis for a larger ecosystem. Jinchang does the same through keystone-species concentration, mutualism, and niche construction. The ore body created the host substrate; the city and Jinchuan built an industrial ecosystem on top of it, and the rest of the supply chain now depends on that engineered niche.