1.   American businesses are especially concerned by Chinese exports of these illegal products to other countries in Asia.

2.   And Chinese exports are highly visible to ordinary Americans, whether they are buying clothing or electronics.

3.   A fifth of all Chinese exports go to the United States.

4.   A weaker yen would make Chinese exports less competitive with those of Japan.

5.   A switch in Chinese exports to Europe and the U.S. may mean that zinc supplies in those regions would jump next year.

6.   About a sixth of Chinese exports would be affected.

7.   But they will also include toys, electronics and other major Chinese exports.

8.   Chinese exports are being hurt by the weakness of the yen and other Asian currencies, particularly the South Korean won.

9.   Chinese exports are more demand-dependent than price-dependent.

10.   Chinese exports remain a concern and could threaten this deficit figure, said Billiton base metals analyst Angus MacMillan.