无石棉材料 NA ; tos free material ; no-asbestos material ; asbestos free material 无石棉垫片 TESNIT ; No asbestos gasket ; non-asbestos gasket ..
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We need 100% asbestos free material.
我们需要100％不含石棉材料。
By a given moulding technique condition, the details of contents for producing asbestos-free calcium silicate board, the primary material for the fire duct, were discussed.
研究了一种新型耐火风管的制造方法，探讨了在一定的工艺条件下耐火风管主材-无石棉硅酸钙板的模压成型配方。
Developing, applying and expanding asbestos-free gaskets is proposed to prevent from the hazards caused by asbestos dust in production process for gaskets material.
为杜绝垫片材料加工制造过程中石棉粉尘引起的危害，应大力开发和应用推广不含石棉的密封垫片。
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