... Port: Shanghai or Ningbo warranty period:2years energy-saving lampLED was known as green lighting products in ... has unparalleled advantages:1. High purity, bright and rich colors;2. Super lifetime;3. There is ... Solid light,good seismic performance, solid and reliable;5. Energy, economy, maintenance-free;6. Dynamic color control, adjustable brightness, ... PWM. 2012 Long life span energy-saving lamp(HMD30W)