The reason why exports come back negative again due to 1) during April 17-day long holiday, making exports lost 5% 2) contains several items that come back negative from positive March 2559.
The reason that export growth turned negative again due to 1) during the month of April with a long 17 days, making the export value to 5% 2) with multiple products that turn a negative month in March 2559. the positive
The reason that export turn negative again. Because 1) during April holidays 17 days. The export value of lost 5% 2). There are several items that turn to negative from March 2559 is positive.