This series of colloid mill is new type of wet ultra-micron particle precessing machine, It is suitable for all milky liquids to homogenization, emulification and comminution. It is widely used in foodstuff, fruit catsup, fruit juice, soymilk, milk and beverage industry, as well as used in daily chemical industry, such as medicine, syrup, Sino-medicine and paste medicine, All pares touching with medium are made of stainless steel. It is ideal equipment for these industries.