Based on the provided search results, there is no specific information available about the exact manufacturing process of APFC Panels at Y S Engineering Solution. The search results state that Y S Engineering Solution is a manufacturer of custom-built APFC Panels that are designed to automatically and intelligently sense and correct reactive power in a system. They create Panels tailored to a client's specific Voltage, load, and harmonic conditions. The general process for creating APFC Panels, as described in the search results from other companies, involves designing the panel based on a Single Line Diagram (SLD), selecting components like capacitor banks, relays, and Contactors, and then assembling and testing the final product to ensure it meets safety and performance standards.