厂价直销圆柱晶振2*6 6M 8M 12M 16M 24M 27M 30PPM 50PPM 100PPM 现货 49S 3.579545M 3.6864M 4M 6M 11.0592M 12M 20M 22.1184M 24M 27M 48M 49.860M价格优惠 有需要者请联系 15062975197 QQ923615399