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 ha
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1. there is a large jump in the film thickness reading during the coating process.2. the crystal stops oscillating during the coating process before the normal end of crystal life.3. crystal does not
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The year 2020 is destined to be an extraordinary year, with the sudden outbreak of New Crown Pneumonia having a serious impact on both our economy and society. Nonetheless, our scientists continued to
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Source: Anti-Shorting Research CenterGlobal Camera Lens ManufacturersIn addition to the ultra-wide-angle and telescopic lenses that are found in many flagship models, the company has added a mid-range
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