As far as the lighting brands on the market are concerned, DEPO (Depo) and TYC are currently common lighting fixtures made in Taiwan. HELLA (Hella) Voleo (Valeo) KOITO (k head) KOYO is the lamp of Foshan. . DEPO is also divided into Taiwan and Kunshan. The former is produced in Taiwan. . The latter is a domestic production in the form of a joint venture. . The price is not much different. . The quality is also very good. . The signal mode is 212-1563. . Some domestic cars are also equipped with Kunshan lamps. . TYC is also produced in Taiwan. . The quality is also very good. It is also often used as an accessory for some cars. . Such as: Hainan Mazda. HELLA is commonly used in German cars. . High technology. Benz. BMW. The lamps are all matching. . Prices vary by model. There is a big difference in technology. VOLEO is also a very famous lamp. Supported by Fukang. A certain Volkswagen model. . Koito Japanese lamps. . Most of Toyota's lamps are produced in Japan. But there is no matching professional lighting fixture. This product is also available in Shanghai. PST lamps and lanterns also use it. . HELLA is also useful. Relatively speaking. . Different car lamps use different brands. I have the following suggestions for purchasing: You need to know what brand of lights your car uses. For example, Mercedes-Benz or BMW. The technology of this lamp is basically the same as that of the brand’s professional lamps. So there is no need to spend hundreds more. Buy original factory lights at the same price... and Toyota... because KOITO does not produce corresponding lamps. Therefore, if you have higher requirements for lighting, it is best to use genuine factory lights, because Toyota series do not have lamps with radiant lights. There are almost none that cost more than 1,000. But the price will be different due to different models rather than different sizes. Remember... Of course, the lighting and other technologies in DEPO lamps are also good... There will not be a big problem for general use. . When purchasing lamps... First of all, you have to look at the packaging... Generally, whether it is a genuine or professional lamp, the paper will be of good quality... (As for what is good, you really have to feel it. .) It’s just not very soft... nor too hard... Then you have to look at the lamp surface... touch it with your hands... (it doesn’t actually work that well) to see if the lamp surface is transparent enough... of course, it’s not a crystal lamp. .It’s a different matter.. It’s best to tap the lamp surface with your hand...generally good lamps will emit a relatively solid sound..bad lamps will emit a clear sound..Lights with glass surfaces are also a different matter. There are still several problems with non-zheng lamps... The lighting problem is the most important... and it is easy to turn gray... and easy to fade... Because of capacity and technical issues... I cannot express it in more detail... because many skills are not What you can say with your mouth...a lot of it depends on experience...