China's environmental protection sector reported steady revenue growth in 2021 as the country has ramped up green growth efforts.

Profits at China's industrial companies fell in the first seven months of this year as the country grapples with pandemic-related disruptions, high temperatures and insufficient domestic demand.

The foreign trade value of North China's Hebei province reached 313.46 billion yuan ($46 billion) in the first seven months of this year.

The industry has also stepped up efforts ensuring safe mining in recent years, Sun said.

The upgrades, targeted to promote clean production and improve efficiency, have brought about both environmental and economic benefits.

China's northernmost province of Heilongjiang saw its foreign trade in goods grow 31.9 percent year-on-year to 145.06 billion yuan ($21.52 billion) in the first seven months of 2022, according to local customs.

China's booming environmental protection industry is playing an increasingly important role in boosting economic growth.

Most of the capital goods monitored by the Chinese government posted higher prices in early August compared with late July this year.