Aulos Tenor Recorder, Baroque Style, with Hard Case 511B-HC

Toyama Gakki AULOS Symphony Tenor Recorder, Baroque Fingering, with Hard Case, 511B(E)
Black, Ivory
Brand: Toyama Gakki
Instrument Key: C Sharp, C
Material: Plastic
There are faint lines from the plastic manufacturing process, but they do not affect the product in any way.
There are thin vertical lines around the finger holes, is this a problem?
The lines formed by the flow of resin during molding are called weld lines and occur vertically to the finger holes.
This is common in plastic molded recorders and does not indicate a quality issue.