... longer service life. Our certifications and customers Oilcyclone™ QYJ-40 series high-efficiency Transformer Oil Purification have already ... Co., Ltd and Weihai Electronic Group. We offer QYJ-40, QYJ-40H, QYJ-40D, some related accessories and after sales service. ... oil, gear oil, lubricating oil, cooling oilSpecifications of QYJ-40H OutputPurifying EffectViscosity range of oil purifiedmm2/SMaximum work ...