NOVELTY - The electric power transmission has an iron pipe, a ceramic tube and a glass tube to allow flow of electric power. The inner surface of glass tube is processed using vapor deposition or metal plating process using metals such as gold, silver and copper. The radiation loss of electromagnetic waves is reduced, when power transmission is performed using electromagnetic waves of sine wave of single wavelength. An iron plate (b), an aluminum plate, a copper plate or a stainless-steel plate, are arranged in center of glass plate (a) fixed with a carbon fiber.    USE - Electromagnetic wave electric power transmission for solar cell of solar cell panel integrated in building material such as ceiling material, cladding material, gypsum wallboard, corrugated-sheet-shaped roof material, Japanese tile and western tile of house, and for door mirror and no-blind spot rear-view mirror of passenger car (all claimed). Can also be used in wooden coffin, boat, container such as transport container for conveying live fishes such as tiger prawn, crab and sea-bream, and house foods, and carton box, and for use in planer-shaped mirror for surgical medical machine used in hospital, lift, automated teller machine (ATM), wheelchair, supermarket, convenience store, factory and warehouse.    ADVANTAGE - The durability and reusability of the building material are improved, and the construction cost of the building material is reduced.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) manufacturing method of electromagnetic wave electric power transmission;    (2) building material;    (3) manufacturing method of building material;    (4) rear-view mirror or door mirror;    (5) manufacturing method of rear-view mirror or door mirror;    (6) interior material;    (7) manufacturing method of interior material;    (8) gypsum wallboard;    (9) manufacturing method of gypsum wallboard;    (10) iron plate;    (11) manufacturing method of iron plate; and    (12) solar cell panel.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the building material.    Glass plate (a)    Iron plate (b)    Polyvinyl butyral resin sheet (c)    Solar cell (d)    Sunray (f)