Hydrogen fuel cell cars are booming and require precise and sealed welding of the fuel cell. Laser welding is an effective solution that ensures sealed welding, controls deformation, and improves the conductivity of the plates. TEYU laser chiller CWFL-2000 cools and controls the temperature of the welding equipment for high-speed continuous welding, achieving precise and uniform welds with excellent air tightness. Hydrogen fuel cells offer high mileage and fast refueling and will have wider applications in the future, including unmanned aerial vehicles, ships, and rail transportation.