... Screen, Display 2.Standing LCD Screen, Display 3.double sided LCD 52" double sides LCD advertising display Parameter:Parameter for LCD ... Time:8ms Panel Life: above 50000 hoursMain Function:1.Double sides screens at the front and back,can show the ... post offices,hospital,schools,etc4.Public Places:Subway,airports,stations,gas stations,toll stations,bookstores,parks,exhibition halls,stadiums,museums, ...