ข้อมูลBuilding elements of block or other shape for the construction of parts of buildings (of relatively thin form E04C0002000000; structural elongated elements designed for load-supporting E04C0003000000, e.g. columns or pillars E04C0003300000; manufacture or material of building bricks, stones, or the like B28, C03, C04; paving elements E01C; general building constructions E04B, e.g. walls E04B0002000000, floors E04B0005000000, roofs E04B0007000000, ceilings E04B0009000000; structural elements specially designed for built-in conduit shafts E04F; special elements for building ovens or furnaces F24B, F27D)

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