Thermal insulation: reduce the heat in summer and cold in winter on the top layer

　　Environmental protection and energy conservation: responding to the national call for energy-saving alkali discharge

　　Beautiful and fashionable: achieving differentiation of rural roofs

　　Short construction period: simple installation and maintenance

　　One time investment: enjoy long-term stable returns

　　Filial Piety to Children: The Affective Care of Parents' Elderly Care