Iminyaka engama-20 yamava kulo mandla
Igama leMveliso: i负压气动输送旋转气锁阀
Ukusetyenziswa: Inkqubo yokuhanjiswa kwe气动yoxinzelello olubi
材料:Ingenziwa ngokwezifiso (intsimbi engatiywayo okanye intsimbi yokuphosa)