COVNA, lub chaw tsim khoom valve nrog 20 xyoo kev paub uas tshwj xeeb hauv motorized valve, pneumatic actuator valve, solenoid valve, ntiaj teb valve, rooj vag valve, thiab lwm yam. Certificate los ntawm ISO9001: 2008. Tej zaum tau cim qhov hloov pauv loj hauv COVNA. Peb tsiv mus rau lub Hoobkas tshiab, qhov loj dua, dav dua, ntau beau ...
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