Hom ntawm cov kav yas

Ntawm cov tsis - nws yog xim hlau kav, yas kav yog cov feem ntau siv. Muaj ntau hom kav yas, uas tau muab faib ua ob pawg: thermoplastic yas pipes thiab thickosetting yas kav dej. Thermoplastic kav suav suav nrog polyvinyl chloride kav, polyphylene kav dej, polyoxymethylene kav, thiab lwm yam; Thermogosetting kav suav nrog cov kav dej phib xaum, thiab lwm yam ntawm cov kav yas ua tau zoo, lub teeb yuag, yooj yim molding, thiab ua tau yooj yim.