Abstract: In a guaranty system according to the present invention, a guarantee obtains from a guarantor a guaranty which guarantees that an amount of an industrial emission generated from a preset industrial business fulfills a preset requirement. Along with the guaranty, the guarantor provides an industrial hardware required to carry out the industrial business to the guarantee without any charge for the hardware. The guarantee may obtain the guaranty through a transaction of purchase and sale of the guaranty, or of a lease of the guaranty. The industrial emission is at least one selected from a waste gas, a waste liquid, an odor, a vibration, a noise, a light, and a ray. The preset requirement is defined by an Official Requirement against the industrial emission.

Abstract: A method for constructing a reinforced concrete vessel at a construct site by assembling prefabricated panel type reinforced concrete members and fastening or connecting the members with an assembling and fixing means at a construction site in a short time and the reinforced concrete vessel obtained therefrom.