This document provides information about the sewing section of a garment manufacturing process. It discusses the machines used such as single needle lock stitch machines, double needle lock stitch machines, and vertical lock stitch machines. It describes the process flow of sewing which includes product analysis, setting up the machine layout and line balancing to achieve production targets, bundling cut pieces and sending them to the line, sewing operations, quality checks, and sending finished bodies to finishing. It also lists common sewing defects and the 7 types of machines needed to make a basic shirt.