A total of 3,200 tonnes of waste paper has been rejected and sent back to its country of origin by Hangzhou Customs in the past month.
This has been done on behalf of Huzhou Customs.
Up to 6 September, customs officials at Chinese ports had rejected 14 batches of waste paper.
One of the largest of these returned shipments was 80 containers of waste paper that had been sent to Zhejiang Huzhou Port and were returned to the United States. They had been rejected for not meeting the Chinese solid waste environmental protection control standards.