The density of tungsten alloy is very high, the maximum density is 18.6g/cm3. High density can exhibit a smaller volume than other materials under the same weight. And this kind of product requires a lot of weight and a small volume, such as mobile phone vibration, vibrating parts of clocks, etc. Tungsten alloy materials can just meet the needs of such products. Compared with other materials, tungsten alloy vibrators have the advantages of precise weight, non-magnetic, high temperature resistance, oxidation resistance, and corrosion resistance.