2. Go into a regular store, buy regular goods, be regular, don't buy products that are too cheap, and buy products with the promise of "three guarantees".
3. Advertisements are for reference only. It is very important to consult the inspection report, especially whether the items such as electric shock protection, durability test and flame retardancy in the inspection report are qualified.
4. Novelty products may not be technically mature, so the most important thing is to certify the products.
At that time, the product markings should be thoroughly checked, including installation instructions, use instructions, replacement instructions, maintenance instructions, etc.
The identification of regular products is often standardized, which should at least include the following contents: trademark or factory name, product model and specification, rated voltage, rated frequency and rated power.
Check whether the product model is consistent with the model specifications of the inspection report and safety certification certificate, and whether the electrical parameters are correct.
Ceiling lamps, wall lamps, table lamps and floor lamps installed on the surface of wooden materials shall be marked with F symbol.
At present, most of the brands with good quality on the market are produced in the mainland and are durable.
It is best to choose products with well-known brands and good reputation.
6. According to the standard, the cross-sectional area of internal and external conductors should be at least 0,5 square millimeters, but in fact, most of the conductors used by some enterprises are only 0,01-0,3 square millimeters.
There are some negative wires without sheath, which is a hidden danger, but it can't be seen from the appearance.
7. According to the standard, after the lamps are normally installed and wired, and when the light source is changed or the lamps are turned on, no part of the human body can touch the charged body, while some lamps, wires and sockets have no life index, that is to say, if the products are qualified, they can be used indefinitely, and only the light bulbs need to be replaced.