... Tube,long life 2 Be made by some kinds of electronic components 3 Certification:ROHS Feature: -Quality electrical components, ... technical process; -70% energy saving than magnetic ballast, needless of starter and complementaryp; -No flare, no noise, and ... factor up to 0.97; -The case is made of cold-rolled steel, reliable, safe, and anti-rust; ... ; -Long average life-span: up to 30, 000 working hours.