... more fashion, higher quality Led track lamp 1, high power LED tunnel light less energy consumption, efficacy, mercury free, no radiation pollution, 2 ... that the service life and enhance the effective high efficient; 4,pure color , high CRI, , response time for ns level; ... 30*17cmLED QTY 30/50/100pcs * (1w) applicationUsed in the tunnel, the subway, highway, little, development zone, charge station, ...