Abstract: An immersion cooling tank includes a tank body and a liquid flow tube. The tank body holds a coolant and an electronic device. The tank body defines an inlet and an outlet. The inlet and the outlet are respectively located at opposite ends of the electronic device for inputting and outputting the coolant. The coolant flows through the electronic device. The liquid flow tube includes at least one adjuster. The liquid flow tube is located inside the tank body and coupled to at least one of the inlet or the outlet. The at least one adjuster faces the electronic device for controlling an amount of the coolant flowing in or out of the tank body.

Abstract: A stocking to be worn on a foot of a person, includes a flattenable hollow tube of stretch material having a first portion with a first open end, a second portion extending from the first portion and having a second open end, and a folded portion folded backward from the second open end of the second portion to surround the second portion and having a circumferentially extending connecting part secured to the second portion along a circumferentially extending securing line, and a circumferentially extending open part movable between a folded position, where the circumferentially extending open part of the folded portion is folded back to surround a corresponding area of the second portion, and an unfolded position, where the circumferentially extending open part of the folded portion is extended forward from the second open end of the second portion away from the second portion.

Abstract: A stocking to be worn on a foot of a person, includes a flattenable hollow tube of stretch material having a first portion with a first open end, a second portion extending from the first portion and having a second open end, and a folded portion folded backward from the second open end of the second portion to surround the second portion and having a circumferentially extending connecting part secured to the second portion along a circumferentially extending securing line, and a circumferentially extending open part movable between a folded position, where the circumferentially extending open part of the folded portion is folded back to surround a corresponding area of the second portion, and an unfolded position, where the circumferentially extending open part of the folded portion is extended forward from the second open end of the second portion away from the second portion.