Dosing device is a tool administration, mixing, conveying fluid, automatic control and integration of equipment, he is widely used in the power plant's raw water, boiler feed water, oil dehydration gathering ground processing system, petrochemicals and various dosing system wastewater treatment system. Such as adding coagulant, phosphate, ammonia liquid, lime, water stabilizer (inhibitor), scale inhibitor, liquid pesticides. Dosing device consists of a solution tank, stirred tank (with stirrer), metering pumps, liquid level gauge, cabinet, piping, valves, safety valves, check valves, pressure gauges, too, a base, escalators and other components (according to the actual requirements). Dosing device according to the desired drug concentration in stirred tank preparation, after stirrer stir into solution tank, the formulated solution with a metering pump (dosing pump) to the dosing point or a specified delivery system. Complete dosing device has a compact, simple and safe, easy to operate use features. The device can also process according to the requirements of different users, targeted design, configure the necessary components to achieve functional fit (such as automatic remote control), economical and practical.