This TOB-X800W wleder is a 800W ultrasonic welding machine for solid cell tab welding. It can be used in glove box. For welding pure aluminum strip 0.10mm + pure aluminum foil 0.012-0.018mm (within 20 layers). For welding pure nickel strip 0.10mm + copper foil 0.012-0.018mm (within 20 layers).