Grundfos Pump is one of the leaders in the global pump, with annual production of nearly 16 million units per year. Circulating pumps for heating and air conditioning, centrifugal pumps and metering pumps for industrial, water and wastewater treatment are their main products. Grundfos is the world's largest manufacturer of circulating pumps, which cover about 50% of the world's market. In 1989, Grundfos became the world's first manufacturer of pumps to be awarded the International ISO9001 Quality Certificate. In 1991, Grundfos Germany also passed the standard quality system certification, in the next few years, some other Grundfos has also received the certificate.