Some coal imported into China has failed to meet environmental standards, a foreign ministry spokesman said in response to reports of dozens of shipments of Australian coal stalled in Chinese ports.
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"In recent years Chinese customs have conducted risk monitoring assessments on the safety and quality of imported coal, and we found that many coal imports have failed to meet environmental standards," foreign ministry spokesman Zhao Lijian said on Wednesday when asked about Australian coal.
China has not given an official reason why the numerous shipments have not been accepted.
It has unofficially banned Australian coal imports since October amid souring relations between the two countries, and in turn, increased imports from Mongolia and Russia.
China had strengthened the examination and testing of imported coal regarding safety, quality and environmental standards "so as to better protect the legitimate interests and the environmental interests of the Chinese side", Zhao said.
Coal is one of seven Australian imported products that have reportedly been targeted with bans by China amid rising tensions between the countries.
Australia last week said the reports were "deeply troubling" but China has denied it is levying coordinated trade action against Australia.
China accounts for about one-third of Australia's total exports.
Traders and analysts estimate up to seven million tonnes of Australian coal are sitting at the Jingtang and Caofeidian ports, both part of a major coal transporting hub in northern China.
The stalled shipments account for about a quarter of all imports waiting to pass customs clearance in China.
"The ban on Australian coal is fully a result of political tensions, not because of economic reasons," Sarah Liu, vice president of consultancy Techno-Power Eco-Energy, told a conference earlier on Wednesday.
China's coking coal imports from Australia slumped in October to 1.53 million tonnes or about 26 per cent of its total imports of the fuel, customs data showed on Wednesday, down from 78 per cent in March.
Despite the bans, Australia remains China's top seaborne coal supplier in 2020, as Mongolia was forced to trim exports in the first half of the year due to the coronavirus outbreak.
Australian Associated Press