HHO 6.0 generator use cylinder design, with better cooling effect.
Others use cube structure, not ok for cooling, with short lifetime.
HHO 6.0 use the newest IGBT power system, with higher efficiency but less power consumption.
Others use normal IGBT power system.
HHO 6.0 use wet anti-backfire system, which is made by 316L steel and received Patent.
Others use normal anti-backfire device.