Just dial a company which has spread their branches all over India, this is company who gives buyer or seller a platform where they see prouct in picture and you may get contact from here and company Infomation can also get this is B2C portal that connet direct business to cusomer all product deatail with catalouge you may put , If define of just dial service which give a service like a mall where all product are avilable for buyer and seller choose one of all alternatives and then fullfill his demand