... and speakers, instrument panel, folders, auto lamp, vacuum cleaners, e 1.Casting molding machines, high precision, beautiful appearance ... using, high-efficiency welding Product specifications high-power ultrasonic welding series: CR-2815 CR-3215 CR-4215 ... factory, plant filtration materials, auto parts industry, CR series ultrasonic welding machine features: 1. Valve, cylinder, pressure gauge, ...