... large (3).Heating mode:Electric heating, hot water heating, heat conduction oil circulation heating, far infrared heating, f (inside) coil heating(4).Cooling way ... liner ETFE reaction kettle Is the solution of high temperature dilute sulphuric acid, hydrofluoric acid, hydrochloric acid and ... coil.Speed cool is banned, in case of excessive temperature stress, cause cooling coil, body produce crack.When ...