Choil Thermal Oil Heater Co., Ltd. founded with the basic philosophy of ” Customer satisfaction and best quality products” in 1984, has been professionally manufacturing only thermal oil Heater (Hot oil boiler).Has been closer to our customers with 21th century energy saving high efficient heater (named Echono thermal oil Heater) newly developed with ceaseless R & D and accumulated technology and has been expanded from choil in Korea to choil in the world.