Species Identification:
https://en.wikipedia.org/wiki/Chaenomeles_japonica

https://dryades.units.it/scuole/index.php?procedure=taxon_page&id=8433&num=5593

Horticultural Information: 

https://bonsai4me.com/speciesguides/chaenomeles-flowering-quince-bonsai/

Mature bonsai examples:

https://www.crespibonsai.com/it/bonsai-da-fiore/7395-chaenomeles-40-cm.html

This specimen Information:

Grown from seed,

repotted in January '23

Substrate: Peat Moss+Pumice+Zeolite+Lava rock

If you liked it, please check out the other trees in my shop:

https://www.ebay.it/usr/luvala-99?_trksid=p4429486.m3561.l2559