We are the biggest manufactor in China for quartz crystal. Nominal frequency:3.2MHz to 100.000MHzOscillation mode:See below ... .999MHz100MaxThird Overtone /AT8.000MHz~15.999MHz50MaxFun, , , , , , , , damenta, l/AT30.000MHz~49.999MHz80MaxThird Overtone /AT16.000MHz~30.000MHz30MaxFundamental/AT50.000MHz~100.000MHz60MaxThird ...