International Vehicle shipping to Korea (South)

Good evening all! I am looking for a vehicle moving company to help my company, Customary Benefits, move a few cars. We are based in Singapore and need the cars at our branch in South Korea by the end of next month for a special event that we are having there at that time. We will need four cars shipped in total, with the possibility of more to follow at a later date so this has the potential for being even more business than just this one time shot. All of the cars are full sized sedans and are up to date on all their warranty paperwork and emissions tests if you require that. Because of the sheer expense of the vehicles, we will be requiring that insurance be offered on these when shipped so please include what options you have for that in place and the associated costs for that.