SPK Electronics Co., Ltd. More than 30 years of excellent experience in Manufacturing / OEM / ODM. The Agent of SEIKO EPSON for frequency controlled products, distributor of 3G / 4G LTE RF Module. Our wide array of Frequency controlled products encompass QUARTZ CRYSTAL , Oscillator , TCXO, VCXO, VCO, OCXO, Saw filters, and Resonators. SPK products enable in GPS, DVB-T, TV, GPS / GLONASS Beido, GSM / GPRS / CDMA / BT cellular phone, Wireless, mobile communication. We are committed to performance enhancement, continuous quality improvement and customer satisfaction.