The manufacturing process for formal shirts and pants can vary depending on the specific materials, design, and production methods used. However, here is a general overview of the typical steps involved:

1. Design: The first step is to create a design for the formal shirt and pant. This can be done by a fashion designer or a team of designers.
2. Material selection: The materials used for formal shirts and pants can include fabrics like cotton, wool, or a blend of synthetic fibers. The specific materials chosen will depend on the desired look and feel of the garments, as well as their performance characteristics such as breathability, wrinkle-resistance, and durability.
3. Cutting: The fabric is cut into the desired pattern pieces using a cutting machine or by hand. For shirts, the pattern pieces may include the collar, cuffs, sleeves, front and back panels, and placket. For pants, the pattern pieces may include the waistband, pockets, front and back panels, and legs.
4. Sewing: The pattern pieces are then sewn together using a sewing machine. This includes stitching the seams, hemming the edges, and adding any necessary details like pockets, buttons, or zippers.
5. Finishing: After the garments are sewn together, they undergo a finishing process to smooth out any rough edges and ensure that all seams are securely attached. This can include pressing with a steam iron to remove any wrinkles and give the garments a polished look.
6. Quality control: Once the formal shirts and pants are finished, they undergo a quality control process to ensure that they meet the desired standards for fit, construction, and overall quality.
7. Labeling and packaging: The final step is to label the garments with any necessary information, such as size and care instructions, and then package them for shipment to retailers or customers.

Overall, the manufacturing process for formal shirts and pants can be complex and involve multiple steps, but attention to detail and quality control are essential to ensuring that the finished products are comfortable, stylish, and of the highest quality.