Key specification Exceeding long service life, 5 years guarantee, and non maintenance required Ic chip design, high power factor of >0.98, high efficiency and energy-saving 10 times of regular bulb High coloration: cri>80, high lighting effect: í²80lm/w Working frequency: 210 khz, non flicker, soft light beam, and eye protective Invariable luminous flux, 95% luminous flux maintenance after 2000 hours service Frequent switch is acceptable, quick and ultra-low temperature startup is adapted, normal working state even at -30íµ Wide color temperature range: 2700k~6400k, abundant colors for different requirement Harmonic wave content is at the international l standard, which is more safe in the electric network Silicon-boron glass tube is adopted, which has the advantages of long service life and multi-sculpt Application: They are widely applied in industry, commerce, and office lighting, such as stadium, workshop, warehouse, airport, railway station, gas station, amusement park, exhibition hall, and supermarket.