1. Scope of work: draw circuit schematic diagrams, pcb diagrams (single-layer board, double-layer board, three-layer, four-layer board). Use protel99se, DXP, Power PCB, Altium Designer, Pads layout drawing software to design.
2. Please provide complete drawing data before PCB design, circuit board size, number of layers, placement position of fixed components, component list and packaging.
