Custom heavy-copper PCBs (typically 3oz to 20 oz+ copper thickness) are essential for high-current, high-power, and thermal-management applications. They are also good at power electronics, electric vehicles (EV), solar inverters, automotive systems, welding equipment, and industrial power supplies, where even the standard FR-4 boards are not able to support the current load or heat dissipation. It is common to encounter problems with sourcing custom heavy copper PCBs using g