Foldable container and foldable supporting frame thereof, and folding method

A foldable container for pet bathing, comprising:

• a foldable supporting frame;
• a container body arranged on said foldable supporting frame, wherein said container body comprises a surrounding wall, and a bottom wall connected to said surrounding wall, wherein said bottom wall of said container body is constructed to have two wall layers and a receiving pocket between said two wall layers, such that said wall layers are connected to said surrounding wall, wherein a handle is connected to a middle area of said bottom wall of said container body, wherein said container body is made of a material selected from the group consisting of Polyethylene, Polyvinyl Chloride, Polypropylene and Thermoplastic Urethane, wherein said bottom wall has a drain port provided adjacent to said handle at the middle area of said bottom wall for draining the water in said container body, wherein said foldable container further comprises a drain pipe connected to said drain port for allowing the water to flow out said container body;
• and
• two pad bodies disposed in said bottom wall of said container body at two opposite sides of said drain port, wherein said two pad bodies are spaced apart from each other, said handle and said drain port are positioned between said two pad bodies, wherein said container body, which is waterproof and flexible, is constructed to be unfolded for containing a liquid for the pet to bath, wherein said two pad bodies are arranged for supporting the pet in said container body, wherein said pad bodies are received in said receiving pocket so as to retain said pad bodies at a bottom of said container body, wherein said container body is folded up with a folding of said foldable supporting frame and unfolded with an unfolding of said foldable supporting frame, wherein said two pad bodies are folded and overlapped with each other with a folding of said container body, wherein said handle is configured for driving the folding of said foldable supporting frame and said container body by a pulling operation.