HONG KONG , China ( CNN ) -- Health authorities in Hong Kong have found more eggs contaminated with the chemical melamine . Chinese consumers were taking the news in stride . `` Stop eating eggs ? '' asked one customer . `` That 's not doable . '' The chemical is at the center of a tainted milk scandal that has sickened more than 50,000 children across China . It 's showing up in fresh eggs , according to Hong Kong 's Center for Food Safety . Contaminated eggs were found in a batch produced by Jingshan Pengchang Agriculture Product Company , located in Hubei province , about 430 miles ( 695 km ) east of Shanghai , the center said in a statement Tuesday . Although much lower in melamine content than contaminated eggs produced by Hanwei Eggs that were discovered last week in Hong Kong , the Jingshan eggs were still above the legal limit . Tainted eggs from Hanwei had nearly double the maximum permissible level . Health officials in Zhejiang City also found melamine in Ciyunxiang-brand eggs produced by Changzhi City Green Biological Development Center , from Shanxi Province . Watch how melamine is thought to have entered the food chain » . Melamine is a chemical used in making plastics and fertilizer . But in recent times , it has become the badge of shame for the Chinese food industry . Authorities say people illegally added it to food products to suggest that they contained a higher level of protein . Learn more about the chemical melamine » . U.N. officials worry that melamine has been introduced to animal feed and that it may turn up in chicken , pork , farmed fish and other products . Health officials in Hong Kong say that there 's little risk to human health -- and that a child would have to eat perhaps 20 eggs a day for the melamine to have an effect . But Wal-Mart decided not to take any chances . It pulled Hanwei eggs from the shelves of its supermarkets across China . The egg scare is unlikely to take on the same dimensions as the tainted milk powder scandal , which sickened 54,000 Chinese children and led to the deaths of four babies . Again , melamine was the culprit -- and the consequences could be long-lasting . Watch more on the local reaction to melamine found in eggs » . Experts say melamine 's health risks are not well known . According to Dr. Dan Blumenthal of the Morehouse School of Medicine in Atlanta , Georgia , `` something we do n't know is whether there is a safe amount of melamine in food . '' In the meantime , Blumenthal recommends `` the prudent thing to do is to stay away from foods that might be contaminated , and this especially means infant formula and other dairy products that are coming from China . '' The Chinese leadership , long criticized by other governments for poor food safety standards , has promised action . A committee of the National People 's Congress is reviewing a new draft law . Prime Minister Wen Jiabao said last weekend , `` Food is a continuous process that begins in the fields and ends on your dinner table . From production to transportation to refining to packaging to manufacture , every process needs to go through thorough and strict testing . '' The stakes are high for China 's food industry and its consumers . Food exports from China were worth $ 27 billion in 2006 , and Chinese food exports to the United States have risen fivefold since 1990 . Recent scandals involving melamine have led governments around the world to ban the import of certain Chinese foods ; and Beijing wants to restore credibility to the `` Made in China '' label . CNN 's Yuli Yang contributed to this story .
Tainted eggs from Hanwei were found in Hong Kong late last week . China concerned that melamine has been introduced to animal feed . Tainted milk powder scandal sickened 50,000 Chinese children ; killed 300 . Chinese milk exports to the United States have risen 10 - fold since September .