The company's predecessor was Tianjin Bohai Chemical (Group) Co., Ltd. Bohai Chemical was incorporated in Tianjin, People's Republic of China (“China”) on June 8, 1993. Shares listed on the Hong Kong Stock Exchange Limited (“H shares”) were listed and traded in May 1994, while shares listed on the Shanghai Stock Exchange (“A shares”) were listed and traded in June 1995. The company's main business consists of basic business and strategic new business. The basic business includes municipal sewage treatment, water supply, reclaimed water, etc., and is the main source of the company's revenue and profit; new strategic businesses include new energy cooling and heating, sludge disposal and resource utilization, hazardous waste business, photovoltaic power generation and energy storage, etc., which complement the basic business in terms of profitability, economic added value, and payback period, and optimize the overall business structure. For the 19th year in a row, the company has won honors such as “Top 10 Influential Enterprises in China's Water Industry”, “China's Top 50 Environmental Enterprises (Revenue)”, and the “Complete Complete Technology and Equipment for High-Standard Urban Sewage Treatment Process for Aquatic Ecological Safety” project won the first prize of the Ministry of Construction's Huaxia Construction Science and Technology Award.