SAC code for book binding

998912: Printing and reproduction services of recorded media, on a fee or contract basis

This service code includes services related to bookbinding, folding, assembling, stitching, gluing, collating, basting, adhesive-binding, trimming, gold stamping services. Other book finishing services such as folding, cutting, stamping, drilling, punching, perforating, embossing, sticking, gluing and laminating.

https://www.cbic.gov.in/resources//htdocs-cbec/gst/Explanatory_notes.pdf (Pg. 96)