Classification Information
Cobbles; Macadam; Sandstone; Stones; Aquarium gravel; Artificial stone; Clay sculptures; Cobbles and boulders; Decorative aquarium stones; Decorative spheres of stone, concrete, marble; Greenhouses, transportable, not of metal; Handrails, not of metal, for swimming pools; Non-metal monuments; Paving stones; Plastic floorboards; Wall stone; Waterproof membrane for use as a floor underlayment
Nonmetallic Building Materials