Printing is divided into three stages:

1. Pre-press → refers to the work in the early stage of printing, generally refers to photography, design, production, typesetting, output proofing, etc.;
2. Printing in → refers to the work in the middle of printing, the process of printing the finished product through the printing machine;
3. Post-press→refers to the post-printing work, generally refers to the post-processing of printed matter, including glue (laminating), UV, oil, beer, bronzing, embossing, mounting, binding, cutting, etc., mostly used for publicity And packaging printed matter.