›› Re: need correct exchange   (12/22/2020, 4:32 AM)

It depends on what kind of subject you have.
For example, coffee or water, 7 grams will fill very different, not to mention 7 grams of cotton or 7 grams of lead

 


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12/13/2020, 2:00 PM need correct exchange
12/22/2020, 4:32 AM     Re: need correct exchange