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    4. 福州高特光电科技有限公司

      MaterialOptical Neutral Density Glass
      Dimension Tolerance+0.00/-0.10mm
      Thickness Tolerance±0.20mm
      Clear Aperture>90%
      Parallelism3'
      Surface Quality60-40
      Flatness2λper 25 mm
      Optical Density Tolerance±5%

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