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

The trip by rail and sea was about 20 days shorter than if the goods had been sent by sea.

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

State-owned China Energy Investment Corp is ramping up efforts to dispatch coal from production hubs such as Shaanxi and Gansu provinces to Sichuan province and Chongqing.

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

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 LCRC said that since the railway's opening, it has been actively enhancing the transportation organization, optimizing the freight service, and effectively ensuring efficient and smooth transportation.

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