SJK founder in 1989, is a manufacturing-type enterprise of frquency control products. It owns independent brand SJK and complete product line including small SMD crystal resonator, SMD crystal oscillator, traditional DIP crystal resonator and crystal oscillator, high-end oscillator (including crystal oscillator, VCXO, TCXO, OCXO, VC-TCXO, LVDS /PECL output), SAW device, crystal filter(MCF), ceramic resonator, crystal filter and other frequency control products.

The factory is fully reinforced, occupys the land of 30, 000 square meters, with 30 full-automatic production line, has passed ISO 9001, ISO 14001, TS 16949, QC080000 and other system certifications. All products are conformed to RoHS standard. SJK products are widely used incommunications, Network, Automotive electronics, Consumer electrionics, Industrial control, Wearable device, Security, Smart phone, Robot and so on, which can satisfy consumers' different demands and provide one-step supply and service.

SJK owns years of technoloty and advantages such as miniaturization, high precision and other products. It has the most advanced domestic automatic production line, strong exploitation and after-sale technical teams, professional, timely and considerate customer service executives, , who can provide you with high-quality products and service. Believe in us-SJK is the best.