... good waterproof, good dustproof,6. Minimum maintenance cost and long service life7. High quality products,European standard. CE&RoHS ... certificate.8. long lifetime,5% attenuation after 1000 hours,life time is 30,000-50,000 ... manufactuer of LED lighting products for both indoor and outdoor use.LED spot light,LED bulb,LED ceiling light,led floodlight,led downlight,LED tube:SMD ...