If you buy a group purchase, at least 20 sets of lights order, There is no restriction on brand, model and pattern. You can choose as you like and gather up the number of 20 sets of lights and we provide free private logo design service, as long as you purchase more than 20 sets of lamps on this website at one time, you can match the pattern of your own design, and there is no extra charge and you can get a 10% discount There is a 10% discount for ordering 20 sets 
a 20% discount for ordering 20-50 sets
a 30% discount for ordering 50-100 sets