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          項目 指標
          一級品 合格品  
          外觀(目測) 淡黃色顆粒  
          初熔點℃≥ 80.0  78.0   
          加熱減量(70℃3h)%≤ 0.50  0.50   
          灰分%≤ 0.30  0.40   
                 
          備注:粉料 篩余物150um%≤ 0.10   

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