Green Fuel Cell of DAH-AI Biomedical doesn't consume energy when it works. You only need to place iron (even scrap iron) and reaction liquid in the reaction tank. Hydrogen can be fast produced for fuel cell to generate electricity or for internal combustion engine to generate kinetic power. The process is safe, eco-friendly and inexpensive. Applications: various vehicles, e-vehicles, power plants, power sources, internal combustion engines, and any places where are hard to have power...etc. (Many others)