A content display system is disclosed for offering, excellent multimedia content browsingviewing environments to handheld device users, from a server of a communication network, by the use of a handheld device and a cooperating computer device cooperated to the handheld device. In the thermal curing device, a tank vessel configured to have a fiber layer formed on its outer surface by winding carbon fibers impregnated with a thermosetting resin is held to be rotatable about a virtual central axis of the tank vessel. The gap has a top opening and a surface area comprising a bottom and sidewalls running from the top to the bottom.