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Why are some LED lights ridiculously cheap?

Time:2022-07-08 Views:849


What are the characteristics of China's LED lamp market? The first is the price, the second is the price, and the third is the price. As for technical parameters, service life, and warranty period, Shenma is a cloud.


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Buyers will choose cheap LED lights, but buyers don’t think about whether there are manufacturers of such cheap LED lights that can make products of high quality. After all, you can’t let LED manufacturers post it upside down. LED ceiling spotlight is an example to illustrate its cost.


How are those cheap LED ceiling spotlights made? The cost of LED lamps mainly consists of three pieces - lamp beads, shell, and driving power supply. If you want to make the price as low as possible, you can only work on these three aspects.


Lamp beads - domestic 1W lamp beads are sold for 2 cents, why dare to sell them for two cents? The gold wire in the lamp bead is replaced by copper wire, and other raw materials are replaced by inferior materials, which consumers cannot perceive Yes, and it is nominally 1W, but it may only be 0.5W when tested by equipment, and consumers generally do not test it.


Shell - Use some corner aluminum or plastic, the cost is 1 to 3 yuan.


Drive power supply - there are low-quality drivers on the market that sell for more than 1 yuan, or even lower. I don't know how many manufacturers of LED lights have closed down, and those who are irresponsible for making low-quality drivers for profit, But I don't know how much money I made.


In this way, a 3W LED ceiling spotlight is ok with 3 lamp beads + a shell + a driver. Let's calculate the cost of those mid-range goods: lamp beads (2 yuan) + shell (3 yuan) + driver (2.8 yuan) + labor (1 yuan) + packaging (0.5 yuan) + other (1 yuan) = 10.3 yuan.


Merchants still have to make money, and no one does business that doesn’t make money! In addition to management costs, inventory costs, development costs, etc., there is still about 5% of business extraction. Think about it, will the 3W LED ceiling spotlights sold below 10 yuan be qualified products? As for the reasonable price of high-end 3W LED spotlights: lamp beads (6 yuan) + shell (5 yuan) + inner shell (2 yuan) + Drive (5 yuan) + labor (1 yuan) + packaging (1 yuan) + other (1 yuan) = 21 yuan, that is, LED spotlights > 21 yuan are normal and reasonable prices!


So, how to choose a good LED lamp? The following points are for reference:


1. The LED brightness is different and the price is different. LEDs used in LED lamps should be suitable for laser class I standards.


2. LEDs with strong anti-static ability have long life and high prices. Usually LEDs with anti-static greater than 700V can be used for LED lighting.


3. LEDs with the same wavelength have the same color. If the same color is required, the price will be high. It is difficult for a manufacturer without an LED spectrophotometer to produce a product with pure color.


4. Leakage current, LED is a one-way conductive luminous body. If there is a reverse current, it is called leakage current. LEDs with large leakage current have short life and low price.


5. Lighting angle, LEDs with different uses have different light-emitting angles. The special light angle is more expensive.


6. Life, the key to different quality is life, and life is determined by light decay. Low light decay, long life and high price.


7. Chip, the illuminant of LED is a chip, and the price of different chips varies greatly. Chips in Japan and the United States are more expensive. Generally, the price of chips in Taiwan is lower than that of Japan and the United States, and the lowest domestic ones.


8. Colloid, the colloid of ordinary LED is generally epoxy resin. The price of LED with anti-ultraviolet and fire retardant is more expensive. High-quality outdoor LED lighting should be anti-ultraviolet and fireproof.