One man’s waste is Ma Long’s treasure.

And in the new-energy era, his map leads to exhausted lithium-ion batteries – veritable troves of reusable resources that are supercharging profits at Ma’s company, a maker of solid-waste-recycling equipment in central China.

Pricey components such as lithium – a silvery-white alkali metal aptly nicknamed “white gold” – along with other materials such as cobalt and nickel, hold their value beyond the life of the batteries powering China’s massive electric-vehicle (EV) industry.

“There is huge potential in the business of new-energy waste, because new energy is where China and the world are going,” said the sales manager at a subsidiary of Henan Hairui Intelligent Technology in Zhengzhou, Henan province.

Speaking at a recent trade fair for environmental technologies in Shanghai, Ma said 70 per cent of his company’s business is dedicated to machines for recycling batteries and solar panels.

As more and more batteries and solar panels reach the end of their life cycle in China – a global leader in renewable-energy deployment – Chinese businesses like Ma’s are embracing a circular economy, where materials are reused and reintroduced into new products, reducing waste and conserving resources.

And with valuable metals comprising essential components in many of today’s fast-growing, clean-energy technologies, the cycle is especially meaningful in terms of improving China’s mineral independence as it navigates intensifying global trade tensions, according to some analysts.