SJK is a leading manufacturer of frequency control components headquartered in Shenzhen and dedicated to delivering high-quality products to our customers. Our product have crystal resonator, crystal oscillator, mems osc, TCXO, VC-TCXO, VCXO, OCXO, saw resonator and filters,ceramic resonator and filter, MCF. Our products are widely used in Automotive, Telecom, 5G, Medical, AI, IoT, Security, Industry control, consumer electronics. We are certified with ISO 9001, 14001 & 45001 and our products comply with RoHS & REACH regulations.