Income from an unusual, infrequently occurring event or transaction. For example, a firm might sell a subsidiary at a price significantly higher than the value at which that subsidiary's assets are carried on the firm's balance sheet. An extraordinary gain is reported separately from regular income to emphasize the fact that it is nonrecurring.
I am kind of wondering if one or more machines (new or old) could have been sold in Q2 that were either for pilot studies or something else.
Since the Microfill machine has not been launched, then HNSS may be able to put the sale of such sales in the extra-ordinary gain category since it is likely a one time event.
Also note that this extra-ordinary gain may have come from HNSFund. I just find it intersting how close the number correlates with what HNSS is going to sell the new Microfill machine for.