The present invention refers to the submerged side of the cover a support rigidly composite fibres comprising the of file form, real estate can be conserved as the force for gim file underwater to form and separately counting ticket construction method provides heat exchanger.. The present invention refers to water or file or stopper of a seat portion step various pile surface concrete pile impregnated epoxy to a reinforcing fiber material to conforming to the shape of a file form fiber composite to form a; said file on the surface of both ends of mold fiber composite encloses is also provided to a joint coupled with each other; said file and between upper and lower with mold fiber composite, the step of setting lower filler tube; said upper filler tube the surrounded by the cylinder sliding door opening safety fiber composite drawn in to air between file, the epoxy filler tube lower connecting the upper filler tube and drawn by the. air is vacuum jumping out of, the epoxy between said fiber composite sliding door opening safety file upper are implanted step discharged through the mass of the epoxy filler tube; said between mold fiber composite file and the epoxy to complete the charge on, lower filler tube removed, is formed in a portion for removing the same acids in vitro, ex vivo or processing sealing is characterized in that. Therefore, the present invention refers to water to recover the pigment materials as provided by the water of a periphery of an of a file from corrosion or degradation damage to file support a device of which the circumference is the, while protecting the side of the composite fibres comprising the rotational steadily in a file a mold thereby surely film is stored in the form of coating to directly fix the capacitor to the strength of file and a contact point is turned off.