PVC Standard Classification: Nkag siab txog qhov sib txawv ntawm PVC Valve Fittings
PVC, lossis polyvinyl chloride, yog cov khoom siv ntau yam thiab siv dav hauv kev tsim khoom ntawm ntau yam khoom, nrog rau cov khoom siv valve. Thaum nws los txog rau PVC valve fittings, nws yog ib qho tseem ceeb kom nkag siab txog cov txheej txheem kev faib tawm uas siv los txheeb xyuas cov ...
saib kom meej