What grade does the Great Wall property belong to?

According to the real estate network, Great Wall Property is a high-grade property company and a national first-class qualified property service enterprise. Property services include: residential community, commercial community and other services. Moreover, Great Wall Property builds an integrated wireless city operation platform with the help of technologies such as mobile Internet, Internet of Things and cloud computing, integrates online and offline resources, deeply integrates property management and community life services, and promotes the benign development of property management and the butterfly evolution of community lifestyle.