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The construction of the fence around Tianzhu Comprehensive Bonded Zone in Shunyi District (four villages west of Shunyi District Airport) is a key project for the renovation of shantytowns in areas A and B. It is also a livelihood project to improve the living environment and benefit the people in the second phase of the fence around Tianzhu Comprehensive Bonded Zone in Beijing. The project is divided into two construction sites, east and west, with a planned total land area of approximately 760