led billboard 1.the no. of led depends on the design of pattern 2.serivie life: more than 100K hours 3.multifunction such as

led billboard

1.the no. of led depends on the design of pattern 2.serivie life: more than 100K hours3.multifunction such as flashing, stable, etc.4.pattern, characters, animation OEM acceptable5.high safty with the protection of foam material