As the major participant in setting National and Industrial Standards of On-line Leak Sealing, GunnerYS not only provide on-line services, but also keep on developing emergency rescue equipments and tools. We have more than 20 patents for invention and utility model in this field. These tools are used in leak sealing of pipes, storage tanks, tank trucks, ship hulls, gas cylinders, etc., in the sites of chemical industry parks, harbors, power plants, gas industry as well as transportation industry, etc.