What is the process of cultural relics restoration? What are the repair methods?

There are four main steps in the restoration of cultural relics and antiques: cleaning, bonding and mending the old. Cleaning: mainly use various cleaning agents such as potassium permanganate and bleaching powder to remove the dirt and serious rust layer of the vessel, but it cannot harm the decoration and color of the vessel; Bonding: epoxy resin glue, 502 glue and latex are mainly used to bond chips and cracks. Matching repair: materials should be used to make up for the missing parts of cultural relics, including patterns, thickness, materials and colors. , should be consistent with the original. There are many methods such as manual filling, mold repair, and insert. Do old: one is coloring, and the other is doing old.