China manufacturer and supplier of metal halide ballasts,high pressure sodium ballasts,electronic ballasts

1. MH digital 400W electronic Ballast 2. high power factor and high light effect 3. super good quality, full protection for short circuit, overflow current, ignition failure protection etc. 4. easy startup, stable performance, long lifetime. 5. 5 years warranty (three years full and two years prorated) 6. CE,RoHS certificate