(XU YU)

Staff members work on the automatic assembly line for storage batteries at an industrial park in Changxing, east China's Zhejiang Province, on August 28.

This particular line produces 5,000 batteries every day, with 56-percent less energy consumption and 80-percent less staff than traditional equivalents.

Tianneng Circular Economy Industrial Park collects discarded storage batteries and uses them to produce new versions.