Medium grade. The brownstone series projects use mid-to-high-end product series that have obtained national patents among Gemdale's nine product series. They are considered mid-range in Gemdale and are a benchmark project carefully built by Gemdale's first entry into Gu'an. The brownstone series is the most representative product series of Gemdale Group. It combines the cultural temperament of Boston, the hometown of brownstone, and Shanghai style in China, using natural materials such as red bricks, stone, and iron art.