My view is: passive marketing is to wait until the advertisement is finished and the customers come to the door, relying on the authority of relatives and friends to find some customers.

Active marketing is to find potential customers and then communicate with them, such as telephone marketing, network fax marketing, SMS promotion and so on.

However, active marketing needs accurate customer information, otherwise it will waste countless phone bills. To do active marketing, you must start with good telephone data. No matter which way you use it, you must get good data. You can go to some B2B and industry websites to find these data, but is it too much trouble to copy and paste them one by one? Don't worry, there is a search king now. As long as you click the mouse, you can be as accurate as you want. There is a charge for this software, but you can also search for "Guangxi Bobu" on Baidu and download it for free.