Hydrogen generator is a device used to produce hydrogen, which is mainly produced through say an electrolysis reaction. The AEM hydrogen generator designed and developed by EVE Hydrogen Energy Co., LTD. has a compact structure, stable gas production and is easy to use. It is made of stainless steel, with functions of automatic liquid return prevention and automatic flow tracking, which is safe and reliable. It adopts multi-stage purification technology, which makes the hydrogen production more pure.