cov yeeb yuj melt tshuab npuag yaj tshuab spinneret ua yaj tshuab spinneret ua 2 tsis woven npuag ntau lawm kab 2 yaj tshuab spinneret ua 3 tsis woven npuag ntau lawm kab 4 sib tsoo spunbonded spinneret ua tsis-woven npuag ntau lawm kab