Nowadays, LED people are becoming more and more skilled at playing, and many have already come up with new tricks. It's really a rebirth of market chaos. 1 million of 35milledYou sell for 8 cents, haha, I'm even more awesome than you, I sell for 2 cents. After reading the tricks inside, Think Tank felt extremely agonized: betraying my love, forcing me to leave, and finally knowing the truth, tears streamed down my face

Nowadays, the LED market has a wide variety of prices and uneven quality, many of which are due to the fact that in the Chinese market, the appearance of products is similar and there are no patents, so the price war has led to uneven quality. Everyone wants good price and quality, but it's hard to find such a thing in the market.

A certain engineer who has been engaged in LED packaging engineering research and technical management in multiple packaging factories since 2006, but has now left the LED industry, has been working in the LED industry for about 8 yearsledThe various tricks learned from the work of the packaging factory are told to everyone, hoping that everyone can open their eyes wide and choose good LEDledProduct.

LEDledWhy is there such a big price difference


LEDledHow was it made:

Taking the example of simulating high luminous power, LEDledIt is produced through various production processes such as solidification, wire bonding, glue dispensing, lens coating, spectroscopy, packaging, etc. Each link has different technologies, but technology is not the main factor. The quality of raw materials is the main factor, and the price is determined by the raw materials. For example, the price of a 10000 yuan 35mil crystal element is determined by the quality of the raw materialsledThere are options such as 0.2 yuan, 0.4 yuan, 0.6 yuan, 0.8 yuan, and those priced above 1 yuan. Their prices are all reasonable and there is no violent pricing, which is caused by different raw material choices. The informant works as an engineer in a packaging factory and has seen all kinds of raw materials. They have worked in quality packaging factories, garbage packaging factories, and so on. Now, they are revealing their material selection and prices to everyone, hoping to be helpful.

LEDledHow was it made:

Taking the example of simulating high luminous power, LEDledIt is produced through various production processes such as solidification, wire bonding, glue dispensing, lens coating, spectroscopy, packaging, etc. Each link has different technologies, but technology is not the main factor. The quality of raw materials is the main factor, and the price is determined by the raw materials. For example, the price of a 10000 yuan 35mil crystal element is determined by the quality of the raw materialsledThere are options such as 0.2 yuan, 0.4 yuan, 0.6 yuan, 0.8 yuan, and those priced above 1 yuan. Their prices are all reasonable and there is no violent pricing, which is caused by different raw material choices. The informant works as an engineer in a packaging factory and has seen all kinds of raw materials. They have worked in quality packaging factories, garbage packaging factories, and so on. Now, they are revealing their material selection and prices to everyone, hoping to be helpful.

LEDledWhy is there such a big price difference

Taking a 35mil chip as an example. There are 1W crystal elements of 35mil priced between 0.2-0.4 yuan on the marketled(Mainly collected from packaging factories, re divided products, usually defective), with a crystal element of 35mil priced at around 0.6 yuanled(usually made of fake crystal elements), with a crystal element of 0.8 yuan and a size of 35milled(Generally made from ordinary materials that are not very good), there are also 35mil crystals priced at around 1 yuanled(Generally, it is made by packaging factories with good material selection and quality). The informant will inform everyone about the materials used by each packaging factory and the products they produce (in order to simulate lumens)ledFor example, otherledThe same applies.

The trick of the solidification process: Solidification is to fix the chip on the bracket, and the main materials used are the bracket and the chip. Here, let's talk about the quality of the chip and the bracket.

LEDledBracket tricks: Currently, there are aluminum brackets, brass brackets, purple copper brackets, etc. on the market. Aluminum brackets are the cheapest, with a price of around 0.06 yuan for a 10000 yuan imitation lumen, 0.12 yuan for brass, and 0.16 yuan for purple copper. Aluminum brackets have the worst thermal conductivity, followed by brass, and purple copper is the best (people attach great importance to heat dissipation when choosing the shell, and also attach great importance to the quality of the power supply. The price of the shell and power supply is very high, often LED)ledThe choices are getting worse and worse, putting the cart before the horse. Currently available on the market for around 0.4-0.6 yuanledIt is basically made of aluminum brackets, priced at 0.6-0.8 yuan, mostly made of brass brackets, and 0.8-1 yuan, mostly made of purple copper brackets. Even for purple copper brackets, there are options such as 40, 60, 80, 100, etc. for Du Yin, and the prices vary greatly, ranging from 0.13 yuan to 0.18 yuan. About 0.8 yuan is basically made of 60 taels of silver, while 1 yuan is basically made of 80 taels of silver or more. Many packaging factories promise that the bracket is made of copper, but in reality, it is made of brass or adulterated copper.

LED chip tricks: There are various types of LED chips on the market now. Taking the example of the 35 crystal chip, there are now manyledIt is made of a dummy chip. The size and appearance of the chip are the same as those of the chip 35, but the chip structure is completely different, and the light attenuation and life will also be different. A regular crystal chip costs around 0.35 yuan, while a fake crystal chip, also known as a high imitation crystal chip, costs less than 0.2 yuan, resulting in a significant price difference. Many packaging factories, because they bully lighting manufacturers and do not understand chips, sell fake chips as real chips at a price of around 0.6-0.8 yuan, and some even sell them for 0.9 yuan. Legitimate high-power chips also come in different grades, with chips available in the market including specialized products, regular products, large wafers, and loose chips. A certain brand's 35mil chip costs around 0.35 yuan for regular products, around 1 yuan for using high-quality materials, and around 0.8-1 yuan for using inferior materials; The special item costs about 0.25 yuan, the loose piece costs about 0.01 yuan, and the large round piece, also known as the sorting piece, costs about 0.25 yuan. These are basically made for between 0.4 yuan and 0.8 yuan. LED lighting fixtures, the core is LEDled， LEDledThe core is the LED chip, which is also a real chip with a significant price difference. Everyone should keep their eyes wide open and see clearly that poor chips are naturally cheaper.

Cloak of wire bonding process: Wire bonding is the process of connecting chips and brackets with gold wire, using gold wire as the raw material. Currently, there are two types of wire on the market: alloy wire and gold wire. Gold wire is divided into 0.7, 0.9, 1.0, 1.2, etc. according to thickness. The cost of making 1 watt of alloy wire is about 0.01 yuan, and if the gold wire is 1.2, it is about 0.07 yuan. Many people make 1 watt of wire, 0.4-0.6 yuan of 1 watt of 35 mil so-called crystal elementledIt is basically made of alloy wire; Crystal element of around 0.8 yuan, 35milledThe gold wire is basically 1.0 gold wire, and the crystal element is around 35 yuanledIt is basically made of 1.2 gold wires. Gold has good ductility, LEDledTurn on/off, turn on/off, thermal expansion/contraction, thermal expansion/contraction. If it is an alloy wire, the lamp is prone to breakage. If it is a 1.0 gold wire, the lifespan is definitely shorter than a 1.2 gold wire, but simple testing cannot determine the lifespan. It is recommended to choose a good oneledLong lifespan.

The tricky process of powder coating: The powder coating process mainly involves applying fluorescent powder on the chip and making different white light color temperatures according to customer needs. The materials used include fluorescent powder and adhesive mixed with fluorescent powder. Generally, good fluorescent powder is priced at around 8 yuan per gram, while relatively low-end fluorescent powder in China is priced at 1 yuan per gram, with a significant cost difference; The glue used for mixing fluorescent powder is currently around 4500 yuan per kilogram, while many domestic ones cost around 1000 yuan, with a significant cost difference. Poor fluorescent powder and adhesive may cause color temperature drift under the same heat dissipation conditions. It is recommended not to use relatively poor onesled.

Glue filling process trick: After applying powder, cover the bracket with a PC lens and then inject filling glue. There are generally two types of high-power filling adhesives on the market: jelly adhesive and interlayer adhesive. Jelly glue has a relatively high price, around 400 yuan per kilogram. From the outside, it looks crystal clear and high-end; Another type of interlayer adhesive can be good or bad. 80% of packaging factories on the market generally use 80 yuan per kilogram of adhesive, which appears to have a interlayer. To build a high-quality packaging factory, jelly glue is usually used for filling.

Spooky in the splitting process: Generally, orders made according to customer needs are around 100K or 92K, and many packaging factories do low-end products without splitting at all, only removing dead lights and leaving everything else to customers. The shipping rate reaches over 99%. This is also the reason for the price difference.

Summary: From the above situation, it can be seen that those lighting manufacturers who only require low prices to choose suppliers are not necessarily offering good products at low prices, but rather due to different raw materials. No packaging factory is willing to sell at a loss, and no packaging factory is profitable. As long as the price is kept very low, some packaging factories can only do it by changing materials. Some packaging factories, if the price is too low, they won't do it. These are responsible packaging factories that focus on high powerledLooking at it, there are not many companies in Shenzhen that have done well and selected good materials, let alone Zhongshan.