1. Engraving letterpress type (hand-engraved letterpress, electronic engraved letterpress); 2. Lead type type printing (using hot-cast type characters to manually check movable type, mechanical inspection movable type); 3. copy the letterpress type (paper type lead plate, electricity Casting relief, rubber relief, plastic letterpress); 4. Phototype letterpress (photographic zinc letterpress, photo copper letterpress, photosensitive resin letterpress) and other four categories.