... lighting design ;5,Instant start, no flickering, no humming;6,New inner high efficiency ( 95%) constant current driver, with heat ... protection, lead-free material,conforming to ROHS;10, No RF interference ; tube led light Application Widespread use in Family, School, Office, Showing ... our products are 2 year , we have a strictly quality controller systerm , we will try our best to avoid the problem ...