Weihai Haiwang Hydrocyclone Co., Ltd develops high-frequency de-sander cyclone and high-frequency de-sliming cyclone in line with the mud purification. These two cyclons are applied in different sections, which are mainly used in the circulated slurry, sands removal and purification of waste slurry and de-sliming and viscosity reducing etc. working in the well drilling, piling tunnel advancing, continuous wall working etc. engineering fields.