Using PEM technology to electrolyze pure water (eliminating alkali addition) to produce high-purity hydrogen QLS series products are a type of light-weight, high-efficiency, energy-saving and environmentally friendly high-tech patented products. 1. Zero polar distance, highly active PEM catalytic electrode pair 2. A bipolar multi-element electrolytic cell structure with excellent mass transfer and heat transfer chemical process performance 3. A bipolar multi-element electrolytic cell with excellent performance such as electrochemical type, corrosion resistance, and passivation resistance 4. A complete, complete and reliable electrical automatic control system 5. Electrolysis pure water (eliminating alkali addition) to produce hydrogen, no corrosion, no pollution, high hydrogen purity 6. Low unit cell voltage, low internal resistance of the electrolytic cell and no heat generation, Long drying and replacement cycle, High purity of hydrogen 7. Small electrolysis current, but sufficient gas production, fast pressure rise (3-5 minutes) 8. Hydrogen is stabilized and output, and automatically tracks with changes in load gas consumption. The automatic protection technology is complete and reliable. 9. High voltage stabilization accuracy, complete and reliable automatic protection technology such as water shortage, overvoltage, water and flushing. 10. Low noise11. Low power consumption, high electrolysis efficiency. 12. Good sealing performance.