Yes. This understanding is correct however, it is prohibited to put sharp objects, metals, materials that contain a lot of liquid, magnets and electronic circuit in the shuttle cock and the outside material should be natural or synthetic fiber.
The information regarding colors and materials has been released by robocon Vietnam in the ‘appendix’.
As far as local paint codes are concerned, currently they are to be visually matched.
It is given that weight of (rack+manual+automatical) <=50 kg.. Is the weight of rack considering weight of shuttlecock? Also, is it that (manual+rack<=25 kg) and automatic <=25 kg (total =50 kg) ….. Or as previously said (automatical+manual+rack<=50 kg)