How to find big customers when selling office buildings?

When it comes to office buildings, it is business investment, things done by rich people, or problems of big business owners. It is recommended to find someone to buy the internal information of the bank, or find some agents who have bought office buildings before to buy the customer information that has been sold. Doing business means being diligent. Call to play if you have nothing to do. Or send text messages to them in groups. The financial industry is all done by related households. I'm afraid you can't afford the benefits of millions in the middle! There is also the release of information through the network! The network influence in the information age is still quite great, but it still needs diligence! There are not many shortcuts! Good luck!