Hello everyone,I’ll introduce the light bulb.Let's take a look at the catalog.Here are four key points.One, the name of the product.Two, the appearance of the product.Three, the purpose of the product.Four, the advantages of the product.Okay, let's start with the introduction.,First, the light bulb. There are three kinds of light bulb, the first is incandescent lamp, the second is halogen lamp, and the third is led lamp.Then, the appearance. The power of incandescent lamp is 60W, that of halogen lamp is 43W, and that of LED lamp is 8.5W. Their luminous efficiency is the same as 14.3.Next, purpose. Incandescent lights can be used for traffic lights on the road, halogen lights can be used for signboards seen on the street, and LED lights can be used for desk lamps.The four, advantages.First, it can light up everything in the dark. Second, it can replace candles. Third, you can't live without it. Four, it has diversified uses.Finally, I recommend this product because it is an indispensable role in life.If we don't have it, a lot of things can't be doneThank you for your listen.