China National Standards

China surface—Optical GB Standards List

  •  China "surface—Optical" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 40279-2021 Test method for thickness of films on silicon wafer surface—Optical reflection method
    硅片表面薄膜厚度的测试 光学反射法    		 China National Standards
    surface—Optical
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