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I am a student from HONG KONG. My lecturer ask me ...

Question asked by Tommy 1 year 49 weeks ago.
Name: 
Tommy

I am a student from HONG KONG. My lecturer ask me a question that besides flame test and floatability test in H20 and NaCl solution is there any other method to identify a unknown plastic. Could you give me some hint that what direction I should follow to find ?

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