"true " CNS Standards List| Railway Car | Oil Tempered | Arc Welded | Sodium Thiosulfate | Unplasticized high | Dimensions Low | Method Test | Marking Hatchway | |
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CNS 620
2020 Edition Method for determination of true density of refractory materials 耐火材料真密度測定法 |
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CNS 11738
2020 Edition Method of Test for Specific Gravity and true Porosity of Insulating Fire Bricks 絕熱耐火磚比重及真孔隙度試驗法 |
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