UK exporters have been warned against sending recycled material to China after Tuesday unless they are registered with Beijing.
The influential Asian country is standing by its decision that from July 1 all incoming shipments of recovered waste must have a certification number.
It had been hoped that this deadline would be extended but delegates at this weeks Bureau of International Recycling Convention in Berlin were told not to bank on it.
Far East representative Ranjit Baxi insisted that unregistered cargos departing the UK after June 1 risked being turned away. We are very quickly running out of time as the implementation date is approaching. All exporters of recycling material are required to apply for a special registration number. Application forms are available from the Quality Control Inspectorate in Beijing.
All shipments after June 1 must be considered carefully. The cargo will not be inspected if it does not have a number, he said.
China is facing serious problems dealing with the vast quantities of paper, plastic and metal it imports so it is introducing tight controls.
To gain a temporary certificate, firms must prove they have a company business licence and conform to certain industry standards.
This certificate will last for two years.