Thaum lub ob-directional valve yuav tsum tau tswj kev khiav mus rau pem hauv ntej thiab tiv thaiv rov qab, NSEN hlau zaum ob-directional npauj npaim valve yog koj xaiv.Lub sealing adopts tag nrho cov hlau rau hlau qauv, series no feem ntau yog siv nyob rau hauv Fais Plan, Central Cua sov, Roj & Gas kev lag luam.Txais tos tiv tauj peb kom tau txais cov catalog lossis customize valve rau koj qhov project.