In the current market , there are so many build in ic smart led chips , in order to make some interesting and different products from the current Market ,we have make some new versions . For example , there are many SMD 5050 RGBW Smart led , we have SK6812 5050 RGBW too, and our new different version is SK6812 3535 RGBW , This new led use 3535 smd to package , which is much smaller than 5050 ,and it have same protocol as SK6812 5050 rgbw ,Which mean they can use same controller and same program . as it is 3535 smd ,then it can make high density than 5050 in the pcb.