JBW-300B Computer Control Charpy Impact Testing Machine 1.Application: JBW-300B Computer Control Semi-automatic Charpy Impact Testing Machine are mainly used to determine the anti-impact capability of metal materials under dynamic load. Portare sicco munera nulla reditus defensionem et automatic, valorem deperditarum energiae et cycli penduli prehendendi per institutionem cum programmate computatorio,and the results …