UPS, UPS Battery, Inverter manufacturer / supplier in China, offering Low Frequency Online Industrial UPS 500kVA with Isolation Transformer 3 Phase 380V 220V, Surge Protection Offline UPS Line Interactive Standby Backup UPS 650va 800va 1000va, High Quality Offline Backup Uninterruptible Power Supply UPS 650va 1000va 1500va 2000va 3000va Intelligent UPS Backup Power Supply with LCD Display Screen and so on.