These eggs can cause serious health problems if you eat them as they are made from things like Alum, Calcium chloride paraffin wax, gelatine, lactone, carboxymethyl cellulose, sodium alga acid, sodium benzoate, lysine etc. - yuk.
A photo of the final stage in the process of making fake eggs, from Here
Faked Eggs The World's Most Unbelievable Invention (The Internet Journal of Toxicology)
Egg Piracy in China
http://news.xinhuanet.com/photo/2004-12/28/content_2387255.htm (news report in chinese - pics of real and fake eggs)