This document is a checklist designed to assist users in ensuring that they meet the necessary guidelines for submitting Gerber PCB layouts. It outlines specific requirements for Gerber file submission, including the need for files to be compressed into a single .zip file and the prohibition of changes once the order is in process. The checklist details the preparation of Gerber layer files, emphasizing the importance of previewing files in a Gerber viewer and verifying compatibility with manufacturing capabilities. It also specifies requirements for single-sided and multilayer boards, including the need for proper polarity and clearance for internal layers. Additionally, the document addresses drill setup, solder mask specifications, and silk screen requirements, ensuring that all necessary features are included and properly documented. This checklist serves as a comprehensive guide to streamline the PCB order process and minimize errors during submission.