Raws li daim ntawv tshaj tawm kev lag luam tshiab "Kev lag luam iav fiber ntau los ntawm iav hom (E iav, ECR iav, H iav, AR iav, S iav), hom resin, hom khoom (iav ntaub plaub, ncaj qha thiab sib dhos rovings, yarns, tws strands) , daim ntaub ntawv (composites, rwb thaiv tsev cov ntaub ntawv), lub iav fiber m ...
Nyeem ntxiv