A. Pf is 0.92 B.Thd is nearly 0.2 C. 80v to 264v input voltage, applied worldwide, and keeping the same lux. D. Using the high quality material such as anodizing lamp caps, environmental protection pc polymer materials. E. Pc material with key production technique, anti-shake, aseismatic. F. Comparing to t8 fluorescent, energy saving up more than 60% and reducing the present pieces of fluorescent lights. (high lux) G. Warranty 3 years (lighted more than 10 hours everyday) H. Soft starting, avoiding inrush current to led chip, protecting led as for its longer life span. Foam in paper case.