正航生產的承天倍達濾芯采用進口濾材，波折多等優點，濾芯的內部有三道加強筋，來加強濾芯受壓能力，是濾芯在壓力增大的情況下，而不變形等，正航生產的承天倍達濾芯具有，納污量大；耐高溫、耐腐蝕性好等優點。

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