A staff member works on semi-solid lithium products at a new energy company in Shandong province, on May 19, 2021. [Photo provided to chinadaily.com.cn]

The Taierzhuang district of Zaozhuang city, East China's Shandong province, has promoted industrial transformation and upgrading to high-end, green, and intelligent features since the start of this year.

The district launched 10 technological transformation projects in the first four months of the year, and established two digital manufacturing plants, with industrial enterprises reaching an output value of 3.23 billion yuan ($501.6 million) through to April, up 28.6 percent on a yearly basis.

An industrial robot produces lithium battery at a technology company in Shandong province, on May 19, 2021. [Photo provided to chinadaily.com.cn]

A worker checks production of semi-solid lithium batteries at a new energy company in Shandong province, on May 19, 2021. [Photo provided to chinadaily.com.cn]

An industrial robot produces lithium battery at a technology company in Shandong province, on May 19, 2021. [Photo provided to chinadaily.com.cn]

A worker cleans brakes in a manufacturing plant of a brake system company in Shandong province, on May 19, 2021. [Photo provided to chinadaily.com.cn]

An employee works on brakes at a manufacturing plant in Shandong province, on May 19, 2021. [Photo provided to chinadaily.com.cn]