JBW-300A Computer Screen Display Pendulum Impact Tester 300J Application: The JBW-300C/450C/600C microcomputer control automatic testing machine was used to test the performance of metal materials under dynamic load resistance to impact, detection equipment of metallurgy, machinery manufacturing and other units of the necessary, the test equipment is indispensable for the research of new materials research institute. Techinical data: Model JBDW-300Y …