Why is the price gap of LED chips so big?

Chip: Is the chip a foreign ** or a non-**? Which one is from abroad? The top legions are CREE, OSL and Nichia in Europe and America; others such as Preh, Toyoda Gosei, Seoul Semiconductor, etc. are also quite good; Epistar and New Century in Taiwan correspond to mid-end, domestic chip prices Lower. Cell phone//./

Package: It also uses a better chip. Is the package the original factory package or its own package? Should I use epoxy resin or silica gel? Is it double gold wire or single wire? Wait, these all have an impact on prices. Does the chip use high-power LED or SMD as the light source? Of course the high-power is better. If SMD is used as the light source, then the specifications are still other, etc., of course, the cost of different specifications is different, and the price is naturally different. Is the drive circuit constant voltage or constant current, and if constant current is used, what kind of constant current circuit is used? How stable and reliable, and so on. Some low-end LED lamps use low-cost LED drivers, and within a few months or even a few days, they will flash brightly during the trial. This is caused by the use of inferior driving power supplies. Of course, such inferior LED lamps The price is lower.

Heat dissipation method: The life of the LED has a great relationship with the heat dissipation. If the heat dissipation is not good, the light decay will be very serious, and problems will occur after a short period of time.

Heat dissipation materials: At present, most of the domestic LED lamps use aluminum materials for heat dissipation, so the effect of using die-cast aluminum and profile aluminum for heat dissipation is different. Why is the price gap of LED chips so large? Why is the price gap of LED chips so big? Why is the price gap of LED chips so big? Why is the price gap of LED chips so big? In this way, the latter is of course high in cost, and the heat dissipation effect is good.