"backing） " CNS Standards List| Method Test | Methods test | Wall Thickness | Personal protective | Self Rescuer | Polyestermide enamelled | Involute Splines | Grades Pak | |
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CNS 14931
2018 Edition Paper and paperboard - Determination of opacity（paper backing）- Diffuse reflectance method 紙與紙板不透明度（紙張背襯）試驗法－擴散反射率法 |
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