Shenzhen Crystal Technology Industrial Co., Ltd. (SJK), established in 1989, is a global leader in the development and production of frequency control components, including crystal resonators, oscillators, and customized timing solutions. Over the past three decades, SJK has built a strong reputation for excellence by combining deep technical expertise, advanced manufacturing capabilities, and a steadfast commitment to quality and reliability. Headquartered in Guangdong, China, the company serves a wide range of industries, from telecommunications and automotive electronics to industrial automation, consumer devices, IoT, and medical technology.
With more than 30,000 square meters of modern production space and 30 fully automated manufacturing lines, SJK has the capacity to deliver both high-volume and highly customized solutions. Its manufacturing process integrates state-of-the-art automation, strict process control, and comprehensive testing, ensuring that each product meets the highest standards of precision, stability, and consistency. From raw material sourcing to final inspection, every stage is governed by a quality-first philosophy that ensures long-term performance in demanding applications.
SJK is certified to ISO 9001, ISO 14001, and ISO 45001, reflecting its strong foundation in quality management, environmental responsibility, and workplace safety. Furthermore, all products fully comply with RoHS and REACH regulations, underscoring the company’s commitment to sustainability and global regulatory standards. This focus on compliance not only guarantees product reliability but also provides customers with confidence in choosing SJK as a trusted partner in their supply chain.
Driven by the principles of Satisfaction, Just-in-time delivery, and Key-cost efficiency, SJK has continuously refined its operations to balance innovation with cost competitiveness. The company invests heavily in R&D, particularly in the areas of miniaturization, low-power design, and high-precision frequency control, to stay ahead of emerging industry needs. By offering a broad portfolio of standard products alongside tailored solutions, SJK empowers its partners to achieve faster time-to-market and enhanced product performance.
Today, SJK stands as a global supplier and long-term strategic partner to customers around the world. With decades of proven experience, cutting-edge technology, and unwavering dedication to product quality, SJK continues to provide frequency control solutions that enable innovation, drive progress, and support the success of its customers in an increasingly connected world.
