CQ Series magnet pump is the new centrifugal pump used with magnetic coupling. The material of magnet pump has the stainless steel and reinforced polypropylene and engineering plastic etc. The pump has the advantages of reasonable design and entire seal and no leak and anticorrosion characteristic. The rotary seal replaces the stationary seal to insure no leak because the parts which contact with liquids are entirely sealed. Magnet pump is made of engineering plastic with anticorrosion and high strength and ceramic and stainless steel to insure good anticorrosion performance.