Los ntawm kev tsim khoom mus rau kev muag khoom: kev tshuaj ntsuam xyuas ntawm Tuam Tshoj npauj npaim valve, Tuam Tshoj pob valve, Tuam Tshoj rooj vag valve, Tuam Tshoj ntiaj teb valve, Tuam Tshoj kos valve muab saw
Los ntawm kev tsim khoom mus rau kev muag khoom: kev tshuaj xyuas tag nrho ntawm Tuam Tshoj npauj npaim valve, Tuam Tshoj pob valve, Tuam Tshoj rooj vag valve, Tuam Tshoj lub ntiaj teb valve, Tuam Tshoj kos valve muab saw Valve yog ib feem tseem ceeb ntawm cov khoom siv tswj dej, dav siv hauv roj av, tshuaj, el.. .
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