Electroless Copper Description Gintron Cu 406 Stable room temperature electroless copper bath for low build PCB processing. Produces bright, dense, fine-grained rose-pink deposits. Gintron Cu 703 Innovative, stable, high-speed electroless copper plating (deposits 2.0-3.0 microns in 30 min). Yields bright pink, ductile deposits, aiding in convenient through-hole coverage inspection. get a quote