Qingdao Sanli Group Co Ltd (青岛三利集团有限公司) was founded in 1992, and focuses on the design of urban water supply security systems, the research and development of urban high-rise building water supply technology, the production and manufacture of water supply equipment, and the development and production of smart water pumps and smart electric engines. 

It is the only professional company in China's water supply industry that has qualifications for design, production and installation. It currently has four parks and more than 20 subsidiaries.

Sanli Group adheres to the principle of "technology is the basis of development, quality is the basis of products, and credit is the basis of the company". 

Since the invention of the no-negative technique in 1997, the company has been working hard to produce the smart city water supply security system, which has helped urban water supply realize intellectualization, digitalization, networking and visualization through computer technology, Internet technology, Internet of things technology and cloud computing. This has changed the traditional water supply method in China and started a new era of green water supply that is environmentally friendly, energy-efficient, and safe.