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... n his own home and conduct experiments secretly. of.
However, if this method is reported, or an experimental accident occurs, it will be a great trouble, and most of the chemical reagents, strong acids and alkalis, are poisonous and dangerous, and it is far from easy to buy ten years ago. , not only need an ID card, but also go to the public security department for record,
Not to mention such dangerous items now, even if ordinary people want to buy some gasoline, they have to file ...
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