The vibration reduction test is carried out on the whole machine, so the test condition is the actual working condition; The vibration reduction test can also be carried out on a special vibration reduction test bench, that is, to simulate the actual working conditions, artificially manufacture the vibration source, compare the difference between the shock absorber without the shock absorber and the shock absorber installed, so as to evaluate the advantages and disadvantages of the shock absorber. Its products cover various types of punch valve products, including punch valve pads and punch electric butterfly valves