I-COVNA, umenzi wevalve onamava angama-20 eminyaka ekhethekileyo kwivalve enemoto, i-pneumatic actuator valve, i-solenoid valve, ivalve yeglowubhu, ivalve yesango, njl njl. Iqinisekiswe yi-ISO9001: 2008. UMay uphawule inguqu enkulu kwi-COVNA. Safudukela kumzi-mveliso omtsha, omkhulu, ophangaleleyo ngakumbi, ubuhle...
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