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Common Name: (S)-3-Hydroxy-γ-butyrolactone
CAS Number: 7331-52-4
Molecular Weight: 102.089
Density: 1.4±0.1 g/cm3
Boiling Point: 310.3±35.0 °C at 760 mmHg
Molecular Formula: C 4 H 6 O 3
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The 20mm speaker unit uses NdFeB with the best performance, which is small in size, high in power and wide in frequency range under the same magnetic flux. At present, many headphones basically use
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