Cov npuas dej no yog tsim los ntawm cov xov tooj ntawm tes PVC ua npuas ncauj nrog qhov ceev ntawm 250 ± 30kg / m3. Lawv muaj nyob rau hauv ob sab lossis ib sab raws li cov neeg siv khoom xav tau.
Ntug 00 Hardness: 55 ± 7 degree
Thickness: 0 8-16 hli
