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About JCOS
JCOS is a Japan-based semiconductor equipment company that develops and manufactures probe cards and related components used in wafer testing and inspection. Its products are used by semiconductor manufacturers and test operations in quality control and device verification workflows. The company’s probe-card lineup supports electrical testing during chip production and is typically supplied to customers in the electronics and semiconductor industry.
This information is based on publicly available data and is provided for orientation purposes only.
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Last update: February 2026
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