QK hydrogen and air generator is a mixed equipment, both hydrogen and air can be obtain from it. We make LM series Hydrogen Generator that adopts SPE (solid polymer electrolyte) hydrogen generating technology which is the most advanced technology in the world. By direct electrolysis of pure water, without alkali. And the AG oilfree air generator that is using the international advanced rotary compressor, oilfree and noiseless, stable delivery pressure, artistic moulding, small and light together.