<p>Printing is divided into three stages: pre-press → refers to the pre-printing work, generally refers to photography, design, production, typesetting, output proofing, etc .; middle-press → refers to the mid-printing work, the process of printing the finished product through a printer; Back → refers to the post-printing work, generally refers to the post-processing of printed materials including laminating (laminating), UV, oil, beer, bronzing, bumping, mounting, binding, cutting, etc., mostly used for publicity and packaging printed matter.</p>