Because a line style on the mouth of the bottle is small and very thin, which is located on the outer side of the mouth of the bottle is quite difficult to detect Dua yakhrueang machine.
Because of the line on the bottle is very small and very thin at the outer edge of the bottle, which is quite difficult to detect Industries unit machines.
Because the lines on the bottle mouth is very small, and very thin, which is at the edge of the outer bottle which is quite difficult to detect with machinery.