Binding edge - Various edge bones used to form a foil or enhance the shape of a handbag. "The side bones have non core skin bones, genuine skin bones with rubber core, cotton core, spring or steel wire inner core, artificial material side bones, and rubber bones without wrapping material.".

Flat sewing refers to a process that uses a flat sewing machine (i.e., a flat car) to connect single or multiple overlapping parts. It is the most commonly used process in leather sewing, and is suitable for connecting various parts in the relative plane of leather products or sewing decorative threads.

Interior stitching - also known as blind stitching or burying bags - is a traditional process in which the edges of two components are sewn face to face together and turned over, allowing one to see the seams of the components but not the stitching. There are early manual sewing and flat sewing machines after industrialization or high

Various methods of sewing the head carriage are suitable for connecting various internal and external components and making soft handbags.

Open stitching, also known as outer stitching, refers to a traditional process of stitching the inner layers of two connected components together, allowing the upper and lower threads to be seen. There are also manual sewing and high head sewing methods, which are suitable for the final sewing process of the pocket opening and cross head three-dimensional structure of soft and shaped handbags.

Binding Edge Inner Sewing - A decorative traditional process in which the edge of one component is sewn onto the edge bone and then bonded to the edge of another related component for inner sewing. It is suitable for the design and production of soft handbags or shaped handbags with a lattice structure.

Binding Edge Open Seam - A decorative process that uses a decorative edge bone sandwiched between the edges of two components with an oil edge or a hem, and is made using the open seam process. It is suitable for the design and production of various bag products.

Binding and open sewing - A decorative traditional process for sewing the edges of planar components or the contours of three-dimensional structures with a certain width of leather strips (or artificial leather strips, cloth strips, etc.). There are open ended binding, single sided folded binding, double sided folded binding, as well as various reverse binding and nylon webbing inner binding. The binding of flat components is sewn with a flat sewing machine, and the binding of three-dimensional structures is sewn with a high head machine, which is suitable for the design and production of all leather products.

Oil edging - also known as splayed oil edging, is a decorative traditional process of polishing the edges or fitting three-dimensional contours of leather product components and rolling a layer of leather edge oil. The methods of oil edge can be divided into two types: thick oil method with different processing techniques and different processing techniques, and thin oil method that only improves the edge color. The thick oil method is suitable for processing high grade leather products with smooth and full edges; The thin oil method is common for both soft and hard leather, but its edges can be seen with rough fibers and fitting gaps, which are mostly used for the processing of leisure handbags.

Folding - A traditional process in which the edges of product components are thinned or directly coated with glue (or pasted with double-sided adhesive tape) on the edges of the lining or artificial materials, and then folded inward by 2 or 2.5 minutes (inch length unit: 1 minute=1/8 inch). It is suitable for processing various artificial leather packaging materials and leather products.

Semiexposed sewing - A fashionable process in which various parts of different layers are bonded into a three-dimensional structure and sewn using a special column or head shaking machine. This process is suitable for sewing the bottom of bags that cannot be turned over and for three-dimensional wraparound covering, with a three-dimensional process effect that only meets the line and does not see the bottom line from the appearance. In addition, flat sewing machines sew components on the same layer, and after assembly, only the bottom line is visible without the bottom line. The difference between them is that flat sewing machines are suitable for flat sewing, while column and shaking head machines are suitable for three-dimensional sewing.

The above are important processes for designing and manufacturing leather goods. In addition, there are many other processes in the production and assembly process that manual workers in various process flows must master. For designers, it is only necessary to have a certain degree of understanding of various processes in actual work and be able to serve as a reference factor for product design. When designers want to make changes to some key processes, they should use illustrations or text to supplement and explain orally, emphasizing the special effects and change methods after the process changes.