Penyao Environmental Protection Co., Ltd. operates in the environmental water treatment business in China. It provides water investment and operation services, including municipal water supply, municipal and rural sewage treatment, industrial wastewater treatment, reclaimed water reuse, water diversion, water source projects, environmental remediation, black and odorous water body treatment, and urban integrated pipe corridors. The company also engages in engineering contracting, such as design, consulting, procurement, construction, and commissioning; research, design, and production of specialized water treatment equipment; and organic solid waste disposal and resource utilization, covering sludge, kitchen waste, farmers' market waste, and sorted wet waste. Founded in 1984, it is headquartered in Yixing, China.