Among 21 surveyed manufacturing sectors, 12 sectors saw an improvement in PMI reading in August.

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

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.

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.

A total of 16 out of 41 major industries saw growth in profits in the January-July period, and 14 of them reported growth of over 5 percent.

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.

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.