Employed by Facebook to deliver a series of advertisement products for example actual time bidding from 3rd party advertisers.Employed by Fb to provide a number of advertisement items for example authentic time bidding from 3rd party advertisers.18.ninety€ ???????? ??? ?????? u03a7u0391u03a1u03a4u039fu039au0399u0392u03a9u03a4u0399u0391 u03a3u03a5