loading

SJK: High-precision oscillators & filters for global tech industries.

sjk@q-crystal.com+86 755 8835 2869

Support
Founded in 1989 and officially registered in 2003, Shenzhen Crystal Technology Industrial Co., Ltd. is a national-level “Little Giant” enterprise specializing in advanced technologies and a National High-Tech Enterprise in China. Headquartered in Tian’an Cloud Valley, Longgang, Shenzhen, the company has established multiple manufacturing bases across China, equipped with over 30 fully automated production lines and a monthly output capacity of 30 million crystal devices. It also possesses mass production capabilities for ultra-miniature packages such as 1008 and 1210.
We specialize in the R&D and manufacturing of frequency control components, including quartz crystal resonators, MEMS oscillators, and SAW filters. Our full product portfolio is certified to internationally recognized standards such as ISO 9001 and IATF 16949, complies with RoHS and REACH requirements, and has obtained carbon footprint certification. Our products are widely used in 5G communications, automotive electronics, AI, and low-altitude economy applications. The “SJK” brand consistently ranks among the leading suppliers in China’s mobile communication crystal oscillator market and is recognized as a “hidden champion” within the industry.
Guided by the philosophy of “Building Powerful Chips with Perseverance,” we leverage more than 30 years of technical expertise to provide flexible end-to-end solutions ranging from design to testing. We are capable of delivering MEMS series products within 24 hours to support small-volume R&D requirements, while also offering high-precision differential oscillators and OCXOs for demanding applications such as AI computing data centers—building a reliable “timing cornerstone” for the intelligent era.
Get in touch with us
Just leave your email or phone number in the contact form so we can send you a free quote for our wide range of designs!
Founded in 1989, SJK specializes in the manufacturing of crystal resonators and oscillators. With extensive experience in miniaturization, high precision, and low power consumption, our components are widely used across multiple industries.
Contact Us
Contact person: SJK
Tel: +86 755 8835 2869
Email: sjk@q-crystal.com
Add: 12/F, Building 3C, TianAn Cloud Park Phase 1, Bantian, Longgang District, Shenzhen, 518129, China
Copyright © 2026 SJK | Sitemap
Customer service
detect