1). Ua los ntawm cov ntawv tshwj xeeb fibrous nrog cov dej noo permeability, zoo huab cua nruj, tiv thaiv rends, aging kuj, anti-mildew thiab lwm yam. 2). Ncej yog ABS, zoo-zoo, tsis yooj yim rau kev tawg, lub sijhawm ua haujlwm ntev, kev tiv thaiv ib puag ncig, zoo huab cua nruj, xyuas kom muaj zog thiab nruj ...
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