When buying ceiling fan lamps in the lighting market, we must first look at the qualifications of the manufacturers. At present, many lantern factories have fan lights, all of which are processed externally, without their own patents and technologies. The ceiling fan lamp is an electric lamp product, and 3C must be available. There is also a package with the manufacturer's address, telephone number, fax number and implementation standard. Now some small manufacturers, with nothing on the box, have written a luxurious ceiling lamp with a lifetime warranty. Such products cannot be bought, and no product can be guaranteed for life.