Answer: Building materials belong to the 19th category of registered trademarks. Class 19 belongs to non-metallic rigid pipes for construction; asphalt, asphalt; movable non-metallic buildings; non-metallic monuments. In the 1902 subgroup, what type of trademark does building materials belong to? The 1902 subgroup includes: slate powder 190008, fine sand 190010, clay for pottery making 190011, tumbled stone (sandstone) 190012, concrete 190023, and soil for making bricks 190039, soil for brickmaking 190039, limestone 190043, clay (raw material) 190047, road or paving materials 190051, lime 190052, building mortar 190053, mortar 190053, schist 190059, unworked chalk 190072, quartz 190073, crystal stone 190073, stone 190094, clay*190096, gravel 190099, sand and gravel for construction 190100, ballast (building materials) 190104, ballast for paving 190105, gravel 190116, olivine for construction 190132, building stone 190141, ballast stone 190143, travertine 190145, stone products 190146, sand (except foundry sand) 190166, silica (quartz) 190168, terracotta 190172, non-metallic paving blocks 190200, calcium-containing marl 190211, aquarium gravel 190233, aquarium sand 190234, block stone 190237 , porphyry (stone) 190244 slate 190006, roof slate 190007, granite 190098, marble 190120, artificial stone 190142? Expanded perlite C190004, stone powder for construction C190005 Note: slate, roof slate, granite, marble, Artificial stone is similar to the 1906 product.