... for better heat-sink, decrease the LED lighting attention, prolong LEDs working lifetime.High quality SMD LEDs, and constant ... Factory Tianci Lighting Co., Ltd. is located in the High-tech LED industry, the modern international city - Shenzhen in China. ... focused on researching and developing LED commercial lighting products, Such as : LED bulb, LED pl lamp, LED tube, LED R7S, LED AR111 and so on. ...