Tianjin Longpai Energy Conservation and Environmental Protection Engineering Co., Ltd. is a professional and environmentally friendly high-tech enterprise that integrates sewage, reclaimed water, and water purification treatment projects, process design and special treatment of atmospheric treatment equipment, flue gas purification equipment, industrial plant oil pollution treatment equipment, and industrial plant flue gas treatment equipment, as well as sales, design, installation, consulting, and service of energy-saving and environmental protection equipment such as pressure vessels, water supply equipment, heating equipment, air conditioning equipment, industrial hot air units, and dry to clean toilets. Longpai "is one of the top ten brands in China's energy conservation and environmental protection industry, and a well-known trademark in China. Tianjin Longpai is based on high technology, high quality, and high efficiency, relying on research institutes and pursuing a development path that combines industry, academia, and research. Adhering to the scientific development concept of "technology is the primary productive force", the company has focused on investing in technology and developing new product technologies for many years. It has continuously increased its efforts in talent cultivation, taken the path of promoting science and technology, and developed more than ten high-efficiency, energy-saving, and environmentally friendly products. The company has Upstream Anaerobic Sludge Bed (UASB) reactor technology, Anaerobic Granular Sludge Expansion Bed (EGSB) reactor technology, and Aerated Biological Filter (BAF) technology. The UASB reactor and EGSB reactor technologies have reached advanced levels domestically and internationally, and have been successfully used in fields such as starch and starch deep processing, alcohol, beer, printing and dyeing, leather making, papermaking, citric acid, and livestock biogas engineering. The technology of biological aerated filter has reached the leading level in China and has been successfully used in the treatment and reuse of industrial wastewater and urban domestic wastewater, with treatment effects reaching or exceeding national standards. The company has fully passed the international ISO9001 quality management system certification and strictly implemented it to ensure first-class quality, first-class management, and first-class service. To continuously learn and innovate in order to create a world-renowned brand in China, with the service philosophy of "serving every day and every customer with care", meeting the needs of different customers, and emphasizing the perfect unity of economic and social benefits. Tianjin Longpai has always taken "improving the living environment and enhancing the quality of human life" as its mission, "diligence, eagerness to learn, and innovation" as its corporate spirit, and "integration of human and nature" as its environmental protection concept. It continuously improves and develops it, endowing Longpai with a comprehensive and multi-level new era spirit, and making unremitting efforts to realize the common value of employees, customers, and society.