This product is for the rubber and plated brass, galvanized steel wire adhesion promoting agent. Cobalt than ordinary salt and strong bonding with heat and humidfastness resistance, steam, water and salt to prevent metal corrosion, ageing resistance, and adhesion role, and other properties. Weighing accuracy of solid, with low, low cost, easy to use, can reduce the environmental pollution.This product is applicable natural rubber, synthetic rubber or plastic mixed with copper, galvanized steel cord adhesion, particularly applicable to the different thickness of the brass coating adhesion. Widely used in steel radial tires, steel wire enhanced conveyor belt, high pressure hose, dredgers of steel cord for Sludge suction tube, such as wheel brakes rubber and metal products of the direct bonding.