CONCH

Cement; tiles, not of metal, for building; refractory construction materials, not of metal; facings for buildings, not of metal; fireproof cement coatings; macadam; gravestones; plasterboard; marble; granite; slate; concrete; quartz; lime; doors, not of metal; folding doors, not of metal; door casings, not of metal; window frames, not of metal; windows, not of metal; drain pipes, not of metal; plastic pipes used for building; ceilings, not of metal; slag powder; building material, namely, powder soot; cement slabs; prefabricated houses kits, not of metal; roofing, not of metal