Puquan is a hi-tech company dedicated to new irrigation systems development and marketing. With the idea-to supply water whenever plants need in mind, Puquan started to explore new theory for irrigation in 2004. Inspired by natural capillary force, a new concept called “trace quantity irrigation (TQI)” was coined and later TQI irrigation technology was invented and patented, which proved to be more efficient, convenient and adaptive than drip irrigation. [Details]