JJK is a company that attaches great importance to accumulation, especially in the piezoelectric quartz crystal industry with more than 30 years of practical experience. JJK’s enterprise management has always put the stability of the staf in an important position. After years of accumulation, JJK has gradually established a highly stable management team. The customer base of JJK is growing steadily. By the end of 2016, the number of direct users of JJK has exceeded 800.

To provide customers with the most reliable crystal oscillator, JJK’s relentless pursuit of the goal. JJK knew that any failure of the chip could bring huge losses to the customer. Therefore, the manufacturing process of JJK crystal oscillator can be in excess of technology in order to pursue high reliability,but will not cause any damage to reliability in order to reduce cost.In order to further meet the needs of customers, JJK continues to develop related new products, providing customers with a variety of inexpensive coating materials, crystal control related spare parts.

100% Testing and Inspection
To ensure maximum lifetime in your process and stable and accurate rate control, each crystal is examined for:
⊙ Resistance-Resistance is checked to assure measurement stability and longer coating life. Resistance is an indicator of electrical contact and electrode adhesion.
⊙ Frequency-Starting frequency within a small specifcation range is verifed to ensure accurate thickness measurement.
⊙ Curvature-An electrical test for curvature is performed to assure resonance stability. Poor curvature results in measurement stability degrading more rapidly.
⊙ Visual Conformity-Each crystal is inspected for electrode uniformity, surface faws, and other imperfections that are indicators of poor electrode adhesion and contamination.