Ever since Edison invented the electric light, the electric light has gone through three generations of history and is moving into the fourth generation. The first generation - incandescent lamps: Although incandescent lamps bring light to humans, incandescent lamps have high energy consumption and dim light, which is not suitable for reading and writing. The second generation - Inductive fluorescent lamps: Inductive fluorescent lighting lines are sufficient, high brightness, but the harmonic interference, noise and severe stroboscopic defects generated by the ballast are also highlighted, and have already withdrawn from the lighting stage and become history. The third generation of eye-protection lamps - high-frequency fluorescent lamps: Although the high-frequency fluorescent lamps make the naked eye feel stroboscopic. But it produces "high-frequency electromagnetic radiation" that is more harmful than stroboscopic. And precisely the third-generation luminaires currently on the market are sold, which is over 95%. Although the third-generation luminaires are light and stable, the "stroboscopic radiation" brings serious harm to the health of consumers. Because "stroboscopic radiation" cannot be seen or touched, it cannot be detected by professional testers. Therefore, the lighting companies concealed the fact that consumers' physical and mental health disregards the sale of "strobe radiation" lamps, which means that at least 95% of the eye-protection lamps on the market currently have "stroboscopic radiation" hazards. Lighting products "stroboscopic radiation" to achieve "no stroboscopic and no radiation" is a technical difficulty, but also an international difficult research topic, and the research and development of generally weak lighting companies have no manpower, no financial resources to solve this technical problem This is like a fish and a bear's paw. In the end, the company had to sell the luminaire products with the stroboscopic radiation hazard. In their concept, I don’t say there is any stroboscopic radiation hazard. No one knows, in the same industry. Everyone can't solve this problem, and the same product is sold, so they all agree not to mention the "strobe radiation" hazard of eye protection. In the end, only pay attention to the physical and mental health of consumers to pay for "stroboscopic radiation." Perhaps the vast majority of consumers still don’t know how harmful the stroboscopic radiation is, more than one hundred times more than mobile phones, computers and other radiation products. Just spend tens of dollars on the market to buy a test radiation instrument. Can confirm. Seamless Hot Rolled Pipe,Small Diameter Beams,Precision Beams Tongyun Pipe Industry Co., Ltd , http://www.lcsteelpipes.com