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Plastic packaging bags of history
by：Kolysen
2020-07-01
A photographer in a dark room experiment led to the first production of plastic.
Alexander & middot;
Parks have many hobbies, photography is one of them.
In the 19th century, people also can't like today to buy ready-made photographic film and chemicals, must always make your own need.
So each photographer must also be a chemist.
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