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Our company has developed a detailed operation plan for equipment cleaning and replacement. In the shutdown state, the environmental protection facilities operate normally, and the tripartite agreement for testing and operation and maintenance is still valid to ensure that wastewater and exhaust gas are discharged in compliance with standards. Generally, solid waste is disposed of according to the agreement. In terms of hazardous waste, on January 16, 2020, Shandong Huanwo Environmental Protection Technology Co., Ltd., a qualified unit, was commissioned to dispose of the waste liquid mother liquor during the cleaning and replacement process of the foaming agent device

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