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Local health authorities have discovered that more than 600 people, including 103 children, were suffering from lead poisoning in East China's Zhejiang province on Sunday.

Workers at 25 family-run workshops that process tinfoil in Yangxunqiao township in the province's Shaoxing county have dangerously high levels of lead in their blood, according to the results of a preliminary medical test.

Several of the workers' children also have high amounts of lead in their blood.

Test results showed that 26 adults and 103 children are suffering from severe lead poisoning, said a spokesman with the county's health bureau.

Adults are deemed to have severe lead poisoning if they have more than 600 micrograms of lead for every liter of their blood. For children, the amount is more than 250 micrograms for every liter of blood, said the spokesman.

The 129 victims of the poisoning are undergoing a second test, and 12 are receiving treatment at a local hospital, the spokesman said, adding that those confirmed to be suffering from severe lead poisoning will receive the treatment free of charge.

Another 494 people have been found to be suffering from moderate lead poisoning, meaning their bodies contain from 400 to 600 micrograms of lead for every liter of blood.

Lead is commonly used in the processing of tinfoil. Workers and their families, including children, are often exposed to lead in the family-run workshops in Yangxunqiao.

China has not adopted standards governing the use of lead in tinfoil processing.

Medical experts say that children often absorb more lead than adults and discharge it at a slower rate, tendencies which make their blood more likely to contain fatal amounts of the heavy metal.

Questions:

1. How many people have been poisoned?

2. How many family-run workshops were involved?

3. Severe poisoning is considered to more than how many micrograms of lead in adults?

Answers:

1. 600.

2. 25.

3. 600 micrograms.

（中國日報網英語點津 Helen 編輯）

Todd Balazovic is a reporter for the Metro Section of China Daily. Born in Mineapolis Minnesota in the US, he graduated from Central Michigan University and has worked for the China Daily for one year.