Profile: Zhejiang Rongrong Industrial Co., Ltd., is a manufacturer of die-casting aluminum and bimetal radiators. Bimetal radiator is a kind of synthetic radiator which adopts the wielding technology. The surface of bimetal radiator is covered by static spraying plastic, which has strong adhesion strength. Our radiator is suitable for hot water and steam system. Our die casting aluminum radiator has a cast ventilation device, which is at the top of radiation fins.