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Quality Assurance

Yuechung manufacturers its own frequency control products, GPS module & antennas in China. Our manufacturing operations in two workshops are closely monitored through our QC departments, and we are an approved supplier for large companies, like IBM, Cisco, Sony, Suzuki, Samsung, Logitech, LG, etc. We are committed to deliver products that meet clients requirements and also continually enhance their satisfaction through productivity improvements and reduced reworks. Our products, processes and company's structure are geared towards guaranteeing that every order delivered to the client's site has been undergone through our rigorous quality measures. We have also adopted and achieved the given below standards:
  • ISO-9001:2008
  • ISO-14001:2004
  • D&B Duns
Product Portfolio

We manufacture, supply & export following products:
  • Frequency Control Products
    • Quartz Crystal unit
    • Quartz Crystal Oscillator
    • SMD Oscillator
    • VCXO
    • TCXO
    • OCXO
    • SAW
    • Ceramic Resonator
    • Ceramic Filter
    • Discriminator & Trap
    • Crystal Filter
    • OBD2
  • GPS/GNSS received module
  • PS/GNSS antenna module
  • GPS/GNSS receiver
  • GPS/GNSS/RF/Chip/ antenna
  • GPS Module & Antenna
    • G-Mouse
    • RF Antenna
Our Workshops

The Yuechung GPS modules, antennas and frequency control products installed in many companies belonging to different industrial sectors; are entirely designed, manufactured and assembled within one of the two workshops. The Yantai, China based workshop covers ground area of 8,602m2 and floor area of 18,114m2. The ISO 9001/14001 certified facility houses a fully integrated departments, which work in a systematic way to produce 150 Million pieces frequency components annually. The crystal and oscillator equipment are produced utilizing plating unit, blank mounting, package assembly, final adjustment equipment and lastly, resistant welder. We pride ourselves to be one of few workshops in the world with processes started from cutting crystal Y, Z bar.