... standard 3.metal,rubber,plastic,spring etc WDW-300 Competitive Price Computerized Electromechanical Mental Tensile Testing Machine ApplicationsThe WDW-300 ... for tension, compression, bending, shearing and low cycle test. With special grips, it can also do very special test as ... be used according to different test request;Compact structure with easy operation.Limit switch and setting in the software ...