I-COVNA, umkhiqizi wamavalvu onolwazi lweminyaka engu-20 osebenza ngokukhethekile ku-valve enenjini, i-pneumatic actuator valve, i-solenoid valve, i-globe valve, i-valve yesango, njll. Iqinisekiswe yi-ISO9001:2008. UMay umake inguquko enkulu ku-COVNA. Sathuthela efekthri entsha, enkulu, evulekile, ebuhle kakhulu...
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