Diaphracters and sound generators for sound generators

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Disclosed are a vibration diaphragm for a sound-producing device and a sound-producing device. The vibration diaphragm comprises at least one elastomer layer, wherein the elastomer layer is made of a butadiene rubber; and the butadiene rubber is any one of a nickel butadiene rubber, a rare earth butadiene rubber, and a cobalt butadiene rubber, and has a cis-form content of >80%-100%. The vibration diaphragm can still maintain a good acoustic performance under extreme conditions of low temperature.