Lub luj tshib
-
Cam khwb cia hlau luj tshib welded luj tshib seamless welding
Lub luj tshib yog ib qho kev sib txuas yeeb nkab hauv kev teeb tsa plumbing, siv rau kev sib txuas ntawm cov yeeb nkab khoov, siv los hloov qhov kev taw qhia ntawm cov yeeb nkab.