China National Standards

China Glass blanks photochromic GB Standards List

  •  China "Glass blanks photochromic" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 9105-1988 Glass blanks of photochromic spectacle lens
    光致变色玻璃眼镜片毛坯    		 China National Standards
    Glass blanks photochromic
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