56031410> 150 g ib square meter ntawm impregnated filament nonwoven
56031490 Lwm qhov pom ntawm uas tsis yog lub cev hnyav> 150 g / m2
56039110 ≤25 g ib square meter ntawm impregnated lwm yam tsis-ntaub npuag
56039190 Lwm cov ntaub-cov ntaub qhwv tsis hnyav ≤25 g / m2
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