How can the decoration company be so clear that those owners have renovated? .

Hehe, I have more experience in this field. Before I became a designer, I was a home improvement consultant. The reason why the decoration company knows your information phone number, property name, floor number and property progress. It is because the staff of the sales department or the list dealers go to the major decoration companies for one yuan, which means that the property information is not complete to five yuan. Almost all household information has a price from a phone number. I know the progress of your property because the home improvement consultant needs to run the property, that is, go to your property every once in a while to find out about the situation and then call you. I know more about this property than the owner himself. Of course, some decoration companies are cooperative with the property, that is, the decoration company pays money to advertise the property, understands the owner's decoration situation, and prevents other decoration companies from advertising and investigating the property.