How many property management companies are there in No.1 China?

There are about 1 1000 companies, excluding the branches of larger companies, and 70% of them are located in the south of the Yellow River. There are about 1000 national-level qualified enterprises, about 4,000 second-level qualified enterprises, and the rest are Grade III or tentative Grade III (due to different statistical time, the accuracy of the data cannot be guaranteed). for reference only