| 摘要 |
PROBLEM TO BE SOLVED: To provide plate materials capable of being adhered to an application face while keeping joints at constant intervals without executing the complex work using a spacer or the like. SOLUTION: This plate material comprises a main body having a projecting part mounted on one of a longitudinal side face and a part formed on the other longitudinal side face for storing the projecting part, and a projecting piece formed along the longitudinal direction of the main body on a downward face of the projecting part of the main body to form the joints of constant interval on a surface of the main body when the projecting part of another plate material is stored in the storing part.
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