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Harm of the six hazardous substance

Author:京国艺 Source:京国艺 Date:2012-12-06 23:52
Pb: Causes the damage to the Nervous system.
Cd: Caused the damage to skeleton, kidney system
Hg: Causes the damage to the central Nervous system.
Cr6+: Causes the flaw to the hereditary gens.
PBB: Intense abnormality-causing agent. 
PBDE: Intense abnormality-causing agent.
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