Shanghai Nanshi Storage Tank Equipment Technology Co., Ltd. (formerly known as Shanghai Nanhai Petroleum Equipment Factory) is a professional manufacturer of petroleum machinery and equipment, specializing in the production of various specifications of stainless steel, aluminum alloy breathing valves, flame arresters, and flame retardant breathable caps and other petroleum storage tank supporting products. Our company was founded in 1987 and was one of the early enterprises in Shanghai specializing in the production of petroleum machinery, petroleum equipment, petroleum accessories, and other related products. In 1990, we successfully developed a fire-resistant core for petroleum storage tanks and obtained a utility model patent certificate. In 1994, the SCZ series of oil storage tank flame arresters won the Invention and Innovation Technology Star Award. Our company produces a series of supporting accessories including breathing valves, explosion-proof breathing valves, fire-resistant breathing valves, explosion-proof fire-resistant breathing valves, all-weather breathing valves, all-weather explosion-proof breathing valves, flame arresters, pipeline flame arresters, tank flame arresters, gravel flame arresters, filters, basket filters, fire-resistant air caps, fire-resistant vacuum pressure caps, tanker ball valves, aluminum alloy single flange ball valves, tanker breathing valves, oil discharge ports, double door bottom valves, oil measuring holes, hydraulic safety valves, etc. Our company has established a comprehensive quality assurance system, achieved advanced computerized management with superior brand, scientific management, perfect after-sales service system, production technology, and supply and marketing services, further establishing our leading position in the oil pipeline reserve transportation industry. Our company has always been committed to putting people first, relying on technology, constantly innovating, pursuing excellence, and adhering to the idea of emphasizing quality and maintaining reputation. Nanshi brings you quality assurance with leading technology and advanced management, repaying the love of our customers for Nanshi series products with a good reputation, and adhering to the business philosophy of "everything for customers, everything for customers". Nanshi will be market-oriented, talent oriented, and technology supported, enhancing its independent research and innovation capabilities, and increasing the development of new products. To provide customers with high-quality products and services, and to provide users with better quality products and more comprehensive after-sales service.