Very Few LED automobile lighting manufacturers in China has their own laboratories, but we are the one. Every year, we put 3-5% of the annual export revenue to led lighting R&D. We own in-house laboratory equipped with dark room and professional testing instruments in our factory. Our expert engineers carry out various tests against our led light bar and work light products including Salt Spray Test, Waterproof Test, Vibration Test, Integrating Sphere Test, Temperature Cycle Test, UV Accelerated Weathering Test, Falling Test, Isolux Test, Road Illumination Test at night ect to ensure the reliability of our led light products.