It owns more than ten subsidiaries, including Qingdao Lisanzhong Demei Water Equipment Co., Ltd., the largest professional water supply equipment company in China. It is a high-tech enterprise integrating scientific research and development, engineering design, production, installation and debugging services.
Li San's self-developed non-negative pressure water supply equipment has completely changed the disadvantages of traditional water supply methods in China, such as large investment, high energy consumption, serious pollution and large area, and created a new pattern of improving the quality of urban water supply in China with high technology. It is the only enterprise in the water supply industry that has won the honor of promoting new products from the Ministry of Construction.
With its strong R&D capability, the Group has continuously upgraded its products, obtaining more than 200 patents every year and nearly 300 patents in 2008. In recent years, the company's products have won "more than a thousand national patents", "four national gold medals" and "five national key new products". It is a high-tech enterprise with the most patents in Qingdao.
Development of Qingdao Lisan Group
The group has established more than 80 marketing branches all over the country, and its products are all over the country. Lisan non-negative pressure water supply equipment is widely used in state organs, various houses, pressurized pumping stations, hotels, schools, hospitals and so on because of its remarkable characteristics of environmental protection, energy saving and safety.
As a leading water supply enterprise in China, Lisan Group has presided over the compilation of four industry standards, namely, non-negative pressure water supply equipment, microcomputer-controlled variable frequency speed regulation water supply equipment, non-negative pressure integrated intelligent water supply equipment and stainless steel cartridge valves. The technical committee on non-negative pressure water supply equipment of the National Urban Water Supply and Drainage Standardization Technical Committee was established in Lisan.
It established the position of Lisan Group as a leading enterprise in the secondary water supply industry in China and led the development of the secondary water supply industry in China. The national standard "Pressurized and Stable Water Supply Equipment for Non-negative Pressure Pipe Network" compiled by Li San was officially released and implemented on 20 1 1.
The above contents refer to Baidu Encyclopedia-Qingdao Lisan Group Co., Ltd.