1. The boiler burner is provided by a world-renowned manufacturer and automatically burns and stops according to the instructions of the controller. Independent program controller has many safety protections, safe and stable performance and low maintenance rate. 2. Advanced steam boiler automatic controller, full Chinese LCD screen and man-machine interface. Users only need to set it easily, and the boiler can start and stop, adjust the load and automatically feed water according to users' requirements. The boiler has complete functions, perfect protection, simple operation, safety and reliability, and self-diagnosis function. Once there is an abnormal phenomenon in the operation of the boiler, the combustion will be automatically interrupted and an audible and visual alarm will be given. 3. The vertical steam boiler adopts the way of putting down the burner and the double return structure, so that the fuel burns fully and the boiler runs stably; The spoiler is inserted in the flue, which slows down the smoke exhaust speed, increases the heat exchange, improves the thermal efficiency of the boiler and reduces the user's use cost. 4. The horizontal steam boiler is a shell-type all-wet, reflux and three-return pyrotechnic tube structure. The flame burns at a slightly positive pressure in the large combustion chamber, fully extending, with low combustion heat load and high combustion heat efficiency, effectively reducing the exhaust temperature, saving energy and reducing consumption, and being economical to use. The structure of corrugated furnace liner and threaded flue pipe not only improves the heat absorption strength of boiler, but also meets the needs of heat exchange surface expansion, which is scientific, reasonable and durable. 5. This boiler is designed, manufactured and inspected in strict accordance with the requirements of Safety Supervision Regulations for Steam Boilers, JB/T 10094-2002 General Technical Conditions for Industrial Boilers and JB/T 16 19-2002 Manufacturing Technical Conditions for Shell Boilers, so as to 6. The furnace liner of the boiler has a large space, stores a large amount of steam, and has strong load adaptability. The built-in steam-water separation device with reasonable design can meet the requirements of users for using high-quality steam. Manholes, head holes and hand holes are arranged in the furnace body, which is convenient for cleaning the inside of the furnace lining and maintenance. 7. Multi-level interlock protection is provided for boiler safety: pressure switch protection (automatic shutdown and alarm when the pressure is higher than the set pressure), low water level protection (automatic power off and alarm when the water level in the boiler is lower than the alarm level), and safety valve protection (automatic deflation and depressurization when the boiler pressure exceeds the working pressure), so as to ensure that the boiler is foolproof under various working conditions and gets home safely. 8. The organically combined mechatronics has exquisite and novel appearance, compact structure, small occupied space and convenient transportation and installation. 9, using new heat insulation materials and high-quality white color steel plate packaging, light weight, good heat insulation performance, beautiful and generous, not easy to rust. 10, fully automatic/gas-fired steam boilers are widely used in hospitals, schools, textile factories, clothing factories, clothing supermarkets, clothing factories, dry cleaners, restaurants, food factories, beverage factories, bean products factories, meat products factories, canneries, wineries, pharmaceutical factories, packaging factories, building materials factories and paints.