IFAN pvc 45 degree luj tshib, 45 degree vaj huam sib luag txoj kab uas hla, sab hauv intubation, ntxig accessories rau lub luj tshib, upgrade thickening interface, ncua lub neej kev pab cuam, imported pvc raw khoom, ua tib zoo ua, yuav ncua lub neej, thickening ntug buckle, muaj kev ruaj ntseg, dawb los tswj lub ntxig ntev. Lub thickened puab hlau interface yog tawg-pov thawj thiab compression resistant
