工業用油品：如液壓油.變壓器油.透平油.冷凍機油.潤滑油.抗燃油等在使用過程中由于種種原因會混進去一些雜質，主要雜質有機械雜質.水和空氣等，這些雜質會造成腐蝕加快，增加機械磨損，降低工作效率，使油品變壞降低設備使用壽命，嚴重時會產生油路堵塞造成生產事故。
D系列： B085001B085008B085011B085046B085048B105002B105003B105006B105020B125003B125005
C045001C045002C055002C055003C065001C065002C065C065015C085001C085002C085003
C085004C085005C085006C085041C085043C105003C105004C105017C125004D045003
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0990D003BN/HC 0990D005BN/HC 0990D010BN/HC 0990D020BN/HC 0990D020P 0990D020W R賀德克濾芯系列： 0030R 0030R003BN/HC 0030R005BN/HC 0030R010BN/HC 0030R020BN/HC 0030R003BN3HC 0030R005BN3HC 0030R010BN3HC 0030R020BN3HC 0030R003BN4HC 0030R005BN4HC 0030R010BN4HC 0030R020BN4HC 0030R003BN/HC 0030R005BN/HC 0030R010BN/HC 0030R020BN/HC 0030R020P 0030R020W 0060R 0060R003BN/HC 0060R005BN/HC 0060R010BN/HC 0060R020BN/HC 0060R003BN3HC 0060R005BN3HC 0060R010BN3HC 0060R020BN3HC 0060R003BN4HC 0060R005BN4HC 0060R010BN4HC 0060R020BN4HC 0060R003BN/HC 0060R005BN/HC 0060R010BN/HC 0060R020BN/HC 0060R020P 0060R020W 0110R 0110R003BN/HC 0110R005BN/HC 0110R010BN/HC 0110R020BN/HC 0110R003BN3HC 0110R005BN3HC 0110R010BN3HC 0110R020BN3HC 0110R003BN4HC 0110R005BN4HC 0110R010BN4HC