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Obtained the Qianna Vacuum Coating Technology Appraisal Certificate in 1985



High-Performance Vacuum Coating Systems

On April 13, 1987, a provincial newspaper in China reported on the cutting-edge advancement of ion vacuum coating technology—an innovation attributed to the China Air Force Zhengzhou Airport Vacuum Coating Factory, which was then at the forefront of high-tech industrial development.

Qianna Vacuum Coating Technology Appraisal Certificate -1985 Download