Foreign media this week has been citing a report of the United Nations Environment Programme saying that by 2020, computer related e-waste will be four times higher than 2007 and China and India will be the main sources of the poisonous e-waste.

The report shows that the United States is currently the world's largest e-waste producer with an annual e-waste production of about three million tons, and it is followed by China which produces about 2.3 million tons of e-waste each year.

Achim Steiner, executive director of UNEP, said that the report shows once again that it is urgent to build large and effective facilities in China for e-waste collection and management.

E-waste refers to discarded electronic products like telephones, printers, TV sets, refrigerators and other home appliances. Surveys show that e-waste is increasing by 40 million tons annually.