How do door and window merchants cooperate with the property?

They know everything about the whole community. Some owners want to move. First of all, they know whether the owner is changing houses or buying and selling. Sometimes the owner will say, that is, not to mention these two situations, as long as there are changes, we must go to the property registration to guarantee the bottom. As long as you can get on well with the property-related leaders, business will be easy.