Does the subject want to ask "the reason why Tianyi Guzheng is not labeled"? Handmade, imitation, second-hand goods.

1, hand-made: Hand-made Tianyi Guzheng has no brand logo, because Tianyi Guzheng did not add brand elements in the production process.

2, imitation: low-quality imitation Tianyi Guzheng has no brand logo, because imitation is not produced by well-known brands.

3. Second-hand goods: Tianyi used guzheng does not have a brand logo, because Tianyi guzheng did not add a brand logo when it changed hands.